49690018 has 24 divisors (see below), whose sum is σ = 87070464. Its totient is φ = 21205800.

The previous prime is 49690013. The next prime is 49690033. The reversal of 49690018 is 81009694.

It is not an unprimeable number, because it can be changed into a prime (49690013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25623 + ... + 27493.

It is an arithmetic number, because the mean of its divisors is an integer number (3627936).

Almost surely, 2^49690018 is an apocalyptic number.

49690018 is a deficient number, since it is larger than the sum of its proper divisors (37380446).

49690018 is a wasteful number, since it uses less digits than its factorization.

49690018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158 (or 2151 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 49690018 is about 7049.1146961870. The cubic root of 49690018 is about 367.6402488133.

The spelling of 49690018 in words is "forty-nine million, six hundred ninety thousand, eighteen".