1351849057 has 16 divisors (see below), whose sum is σ = 1499654800. Its totient is φ = 1210505472.

The previous prime is 1351849049. The next prime is 1351849063. The reversal of 1351849057 is 7509481531.

It can be written as a sum of positive squares in 8 ways, for example, as 117310561 + 1234538496 = 10831^2 + 35136^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351849057 - 2³ = 1351849049 is a prime.

It is the 36768-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351849067) by changing a digit.

It is a nontrivial repunit in base 36767.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163843 + ... + 171895.

It is an arithmetic number, because the mean of its divisors is an integer number (93728425).

Almost surely, 2^1351849057 is an apocalyptic number.

It is an amenable number.

1351849057 is a deficient number, since it is larger than the sum of its proper divisors (147805743).

1351849057 is a wasteful number, since it uses less digits than its factorization.

1351849057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8452.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 1351849057 is about 36767.5000101992. The cubic root of 1351849057 is about 1105.7138108169.

The spelling of 1351849057 in words is "one billion, three hundred fifty-one million, eight hundred forty-nine thousand, fifty-seven".