1373153444 has 36 divisors (see below), whose sum is σ = 2749078164. Its totient is φ = 596476416.

The previous prime is 1373153399. The next prime is 1373153447. The reversal of 1373153444 is 4443513731.

It can be written as a sum of positive squares in 6 ways, for example, as 259596544 + 1113556900 = 16112^2 + 33370^2 .

It is a super-2 number, since 2×1373153444² = 3771100761538122272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1373153447) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 30659 + ... + 60714.

Almost surely, 2^1373153444 is an apocalyptic number.

It is an amenable number.

1373153444 is an abundant number, since it is smaller than the sum of its proper divisors (1375924720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1373153444 is a wasteful number, since it uses less digits than its factorization.

1373153444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91424 (or 91405 counting only the distinct ones).

The product of its digits is 60480, while the sum is 35.

The square root of 1373153444 is about 37056.0851143237. The cubic root of 1373153444 is about 1111.4920400097.

The spelling of 1373153444 in words is "one billion, three hundred seventy-three million, one hundred fifty-three thousand, four hundred forty-four".