19157072290 has 16 divisors (see below), whose sum is σ = 34545779712. Its totient is φ = 7648817904.

The previous prime is 19157072273. The next prime is 19157072293. The reversal of 19157072290 is 9227075191.

It is not an unprimeable number, because it can be changed into a prime (19157072293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1745634 + ... + 1756573.

It is an arithmetic number, because the mean of its divisors is an integer number (2159111232).

Almost surely, 2^19157072290 is an apocalyptic number.

19157072290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19157072290 is a deficient number, since it is larger than the sum of its proper divisors (15388707422).

19157072290 is a wasteful number, since it uses less digits than its factorization.

19157072290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502761.

The product of its (nonzero) digits is 79380, while the sum is 43.

The spelling of 19157072290 in words is "nineteen billion, one hundred fifty-seven million, seventy-two thousand, two hundred ninety".