19158620690 has 16 divisors (see below), whose sum is σ = 37620564480. Its totient is φ = 6966771120.

The previous prime is 19158620681. The next prime is 19158620693. The reversal of 19158620690 is 9602685191.

It is a happy number.

It is a super-2 number, since 2×19158620690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19158620693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87084530 + ... + 87084749.

It is an arithmetic number, because the mean of its divisors is an integer number (2351285280).

Almost surely, 2^19158620690 is an apocalyptic number.

19158620690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19158620690 is a deficient number, since it is larger than the sum of its proper divisors (18461943790).

19158620690 is a wasteful number, since it uses less digits than its factorization.

19158620690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174169297.

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 19158620690 in words is "nineteen billion, one hundred fifty-eight million, six hundred twenty thousand, six hundred ninety".