1798400902 has 16 divisors (see below), whose sum is σ = 2744092224. Its totient is φ = 883728000.

The previous prime is 1798400893. The next prime is 1798400927. The reversal of 1798400902 is 2090048971.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160627 + ... + 171457.

It is an arithmetic number, because the mean of its divisors is an integer number (171505764).

Almost surely, 2^1798400902 is an apocalyptic number.

1798400902 is a deficient number, since it is larger than the sum of its proper divisors (945691322).

1798400902 is a wasteful number, since it uses less digits than its factorization.

1798400902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12255.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 1798400902 is about 42407.5571331337. The cubic root of 1798400902 is about 1216.0800687949.

The spelling of 1798400902 in words is "one billion, seven hundred ninety-eight million, four hundred thousand, nine hundred two".