1251409104 has 90 divisors (see below), whose sum is σ = 3849587378. Its totient is φ = 379209600.

The previous prime is 1251409099. The next prime is 1251409111. The reversal of 1251409104 is 4019041521.

1251409104 is a `hidden beast` number, since 1 + 251 + 409 + 1 + 0 + 4 = 666.

1251409104 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 629006400 + 622402704 = 25080^2 + 24948^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18487 + ... + 53334.

Almost surely, 2^1251409104 is an apocalyptic number.

It is an amenable number.

1251409104 is an abundant number, since it is smaller than the sum of its proper divisors (2598178274).

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

1251409104 is a wasteful number, since it uses less digits than its factorization.

1251409104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71857 (or 71837 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1251409104 is about 35375.2611863149. The cubic root of 1251409104 is about 1077.6219693505.

The spelling of 1251409104 in words is "one billion, two hundred fifty-one million, four hundred nine thousand, one hundred four".