901991901082 has 8 divisors (see below), whose sum is σ = 1366383771252. Its totient is φ = 446530644000.

The previous prime is 901991901073. The next prime is 901991901113. The reversal of 901991901082 is 280109199109.

It can be written as a sum of positive squares in 2 ways, for example, as 896886655681 + 5105245401 = 947041^2 + 71451^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2232653019 + ... + 2232653422.

Almost surely, 2^901991901082 is an apocalyptic number.

901991901082 is a deficient number, since it is larger than the sum of its proper divisors (464391870170).

901991901082 is a wasteful number, since it uses less digits than its factorization.

901991901082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4465306544.

The product of its (nonzero) digits is 104976, while the sum is 49.

The spelling of 901991901082 in words is "nine hundred one billion, nine hundred ninety-one million, nine hundred one thousand, eighty-two".