18970499715 has 16 divisors (see below), whose sum is σ = 31093112736. Its totient is φ = 9870828800.

The previous prime is 18970499711. The next prime is 18970499719. The reversal of 18970499715 is 51799407981.

It is an interprime number because it is at equal distance from previous prime (18970499711) and next prime (18970499719).

It is not a de Polignac number, because 18970499715 - 2² = 18970499711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18970499711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15422556 + ... + 15423785.

It is an arithmetic number, because the mean of its divisors is an integer number (1943319546).

Almost surely, 2^18970499715 is an apocalyptic number.

18970499715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18970499715 is a deficient number, since it is larger than the sum of its proper divisors (12122613021).

18970499715 is a wasteful number, since it uses less digits than its factorization.

18970499715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30846390.

The product of its (nonzero) digits is 5715360, while the sum is 60.

The spelling of 18970499715 in words is "eighteen billion, nine hundred seventy million, four hundred ninety-nine thousand, seven hundred fifteen".