19957498 has 12 divisors (see below), whose sum is σ = 32905530. Its totient is φ = 9071480.

The previous prime is 19957493. The next prime is 19957501. The reversal of 19957498 is 89475991.

It can be written as a sum of positive squares in only one way, i.e., 10673289 + 9284209 = 3267^2 + 3047^2 .

It is not an unprimeable number, because it can be changed into a prime (19957493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40993 + ... + 41476.

Almost surely, 2^19957498 is an apocalyptic number.

19957498 is a deficient number, since it is larger than the sum of its proper divisors (12948032).

19957498 is a wasteful number, since it uses less digits than its factorization.

19957498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82493 (or 82482 counting only the distinct ones).

The product of its digits is 816480, while the sum is 52.

The square root of 19957498 is about 4467.3815597059. The cubic root of 19957498 is about 271.2493449976.

The spelling of 19957498 in words is "nineteen million, nine hundred fifty-seven thousand, four hundred ninety-eight".