149535809435898 has 48 divisors (see below), whose sum is σ = 325064688624000. Its totient is φ = 49680814533120.

The previous prime is 149535809435891. The next prime is 149535809435923. The reversal of 149535809435898 is 898534908535941.

149535809435898 is a `hidden beast` number, since 1 + 4 + 9 + 53 + 58 + 0 + 9 + 435 + 89 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (149535809435891) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1552423 + ... + 17363226.

It is an arithmetic number, because the mean of its divisors is an integer number (6772181013000).

Almost surely, 2^{149535809435898} is an apocalyptic number.

149535809435898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

149535809435898 is an abundant number, since it is smaller than the sum of its proper divisors (175528879188102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149535809435898 is a wasteful number, since it uses less digits than its factorization.

149535809435898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18917107 (or 18917104 counting only the distinct ones).

The product of its (nonzero) digits is 6718464000, while the sum is 81.

The spelling of 149535809435898 in words is "one hundred forty-nine trillion, five hundred thirty-five billion, eight hundred nine million, four hundred thirty-five thousand, eight hundred ninety-eight".