1396502645 has 8 divisors (see below), whose sum is σ = 1684487256. Its totient is φ = 1111412736.

The previous prime is 1396502633. The next prime is 1396502651. The reversal of 1396502645 is 5462056931.

It can be written as a sum of positive squares in 4 ways, for example, as 149989009 + 1246513636 = 12247^2 + 35306^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1396502645 - 2⁸ = 1396502389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722612 + ... + 724541.

It is an arithmetic number, because the mean of its divisors is an integer number (210560907).

Almost surely, 2^1396502645 is an apocalyptic number.

It is an amenable number.

1396502645 is a deficient number, since it is larger than the sum of its proper divisors (287984611).

1396502645 is a wasteful number, since it uses less digits than its factorization.

1396502645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447351.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 1396502645 is about 37369.8092716567. The cubic root of 1396502645 is about 1117.7566290321.

The spelling of 1396502645 in words is "one billion, three hundred ninety-six million, five hundred two thousand, six hundred forty-five".