155898994 has 16 divisors (see below), whose sum is σ = 241496640. Its totient is φ = 75433680.

The previous prime is 155898979. The next prime is 155899021. The reversal of 155898994 is 499898551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059 + ... + 17689.

It is an arithmetic number, because the mean of its divisors is an integer number (15093540).

Almost surely, 2^155898994 is an apocalyptic number.

155898994 is a deficient number, since it is larger than the sum of its proper divisors (85597646).

155898994 is a wasteful number, since it uses less digits than its factorization.

155898994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16785.

The product of its digits is 4665600, while the sum is 58.

The square root of 155898994 is about 12485.9518659972. The cubic root of 155898994 is about 538.2050530533.

The spelling of 155898994 in words is "one hundred fifty-five million, eight hundred ninety-eight thousand, nine hundred ninety-four".