90493432850 has 12 divisors (see below), whose sum is σ = 168317785194. Its totient is φ = 36197373120.

The previous prime is 90493432837. The next prime is 90493432879. The reversal of 90493432850 is 5823439409.

It can be written as a sum of positive squares in 3 ways, for example, as 52156967641 + 38336465209 = 228379^2 + 195797^2 .

It is a super-2 number, since 2×90493432850² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90493432795 and 90493432804.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 904934279 + ... + 904934378.

Almost surely, 2^90493432850 is an apocalyptic number.

90493432850 is a deficient number, since it is larger than the sum of its proper divisors (77824352344).

90493432850 is a wasteful number, since it uses less digits than its factorization.

90493432850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809868669 (or 1809868664 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 90493432850 in words is "ninety billion, four hundred ninety-three million, four hundred thirty-two thousand, eight hundred fifty".