9001661942 has 32 divisors (see below), whose sum is σ = 17596014912. Its totient is φ = 3351619584.

The previous prime is 9001661927. The next prime is 9001661951. The reversal of 9001661942 is 2491661009.

9001661942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9001661942² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9001661896 and 9001661905.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1451603 + ... + 1457790.

It is an arithmetic number, because the mean of its divisors is an integer number (549875466).

Almost surely, 2^9001661942 is an apocalyptic number.

9001661942 is a deficient number, since it is larger than the sum of its proper divisors (8594352970).

9001661942 is a wasteful number, since it uses less digits than its factorization.

9001661942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909432.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 9001661942 is about 94877.0886041514. The cubic root of 9001661942 is about 2080.2118514186.

The spelling of 9001661942 in words is "nine billion, one million, six hundred sixty-one thousand, nine hundred forty-two".