991901162 has 8 divisors (see below), whose sum is σ = 1700402016. Its totient is φ = 425100492.

The previous prime is 991901153. The next prime is 991901171. The reversal of 991901162 is 261109199.

It is an interprime number because it is at equal distance from previous prime (991901153) and next prime (991901171).

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35425028 + ... + 35425055.

It is an arithmetic number, because the mean of its divisors is an integer number (212550252).

Almost surely, 2^991901162 is an apocalyptic number.

991901162 is a deficient number, since it is larger than the sum of its proper divisors (708500854).

991901162 is a wasteful number, since it uses less digits than its factorization.

991901162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70850092.

The product of its (nonzero) digits is 8748, while the sum is 38.

The square root of 991901162 is about 31494.4624021430. The cubic root of 991901162 is about 997.2930664558.

The spelling of 991901162 in words is "nine hundred ninety-one million, nine hundred one thousand, one hundred sixty-two".