1372737545 has 4 divisors (see below), whose sum is σ = 1647285060. Its totient is φ = 1098190032.

The previous prime is 1372737529. The next prime is 1372737551. The reversal of 1372737545 is 5457372731.

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: 5457372731 = 21101 ⋅258631.

It can be written as a sum of positive squares in 2 ways, for example, as 207129664 + 1165607881 = 14392^2 + 34141^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372737545 - 2⁴ = 1372737529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1372737496 and 1372737505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137273750 + ... + 137273759.

It is an arithmetic number, because the mean of its divisors is an integer number (411821265).

Almost surely, 2^1372737545 is an apocalyptic number.

It is an amenable number.

1372737545 is a deficient number, since it is larger than the sum of its proper divisors (274547515).

1372737545 is an equidigital number, since it uses as much as digits as its factorization.

1372737545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274547514.

The product of its digits is 617400, while the sum is 44.

The square root of 1372737545 is about 37050.4729389518. The cubic root of 1372737545 is about 1111.3798129049.

The spelling of 1372737545 in words is "one billion, three hundred seventy-two million, seven hundred thirty-seven thousand, five hundred forty-five".