1393602745 has 4 divisors (see below), whose sum is σ = 1672323300. Its totient is φ = 1114882192.

The previous prime is 1393602733. The next prime is 1393602757. The reversal of 1393602745 is 5472063931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5472063931 = 61979 ⋅88289.

It is an interprime number because it is at equal distance from previous prime (1393602733) and next prime (1393602757).

It can be written as a sum of positive squares in 2 ways, for example, as 594579456 + 799023289 = 24384^2 + 28267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1393602745 is a prime.

It is a super-2 number, since 2×1393602745² = 3884257221743070050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1393602698 and 1393602707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139360270 + ... + 139360279.

It is an arithmetic number, because the mean of its divisors is an integer number (418080825).

Almost surely, 2^1393602745 is an apocalyptic number.

It is an amenable number.

1393602745 is a deficient number, since it is larger than the sum of its proper divisors (278720555).

1393602745 is an equidigital number, since it uses as much as digits as its factorization.

1393602745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278720554.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 1393602745 is about 37330.9890707439. The cubic root of 1393602745 is about 1116.9824023888.

The spelling of 1393602745 in words is "one billion, three hundred ninety-three million, six hundred two thousand, seven hundred forty-five".