19492250018 has 16 divisors (see below), whose sum is σ = 29672818560. Its totient is φ = 9601846800.

The previous prime is 19492250003. The next prime is 19492250033. The reversal of 19492250018 is 81005229491.

It is an interprime number because it is at equal distance from previous prime (19492250003) and next prime (19492250033).

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, 60968 + ... + 206643.

It is an arithmetic number, because the mean of its divisors is an integer number (1854551160).

Almost surely, 2^19492250018 is an apocalyptic number.

19492250018 is a deficient number, since it is larger than the sum of its proper divisors (10180568542).

19492250018 is a wasteful number, since it uses less digits than its factorization.

19492250018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268153.

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 19492250018 in words is "nineteen billion, four hundred ninety-two million, two hundred fifty thousand, eighteen".