901992801902 has 8 divisors (see below), whose sum is σ = 1353398341656. Its totient is φ = 450860021352.

The previous prime is 901992801847. The next prime is 901992801923. The reversal of 901992801902 is 209108299109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×901992801902² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68181533 + ... + 68194760.

It is an arithmetic number, because the mean of its divisors is an integer number (169174792707).

Almost surely, 2^901992801902 is an apocalyptic number.

901992801902 is a deficient number, since it is larger than the sum of its proper divisors (451405539754).

901992801902 is a wasteful number, since it uses less digits than its factorization.

901992801902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136379602.

The product of its (nonzero) digits is 209952, while the sum is 50.

The spelling of 901992801902 in words is "nine hundred one billion, nine hundred ninety-two million, eight hundred one thousand, nine hundred two".