19298837138 has 32 divisors (see below), whose sum is σ = 35844488064. Its totient is φ = 7603368192.

The previous prime is 19298837137. The next prime is 19298837143. The reversal of 19298837138 is 83173889291.

It is a super-2 number, since 2×19298837138² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19298837137) 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 15 ways as a sum of consecutive naturals, for example, 932645 + ... + 953112.

It is an arithmetic number, because the mean of its divisors is an integer number (1120140252).

Almost surely, 2^19298837138 is an apocalyptic number.

19298837138 is a deficient number, since it is larger than the sum of its proper divisors (16545650926).

19298837138 is a wasteful number, since it uses less digits than its factorization.

19298837138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885826.

The product of its digits is 5225472, while the sum is 59.

The spelling of 19298837138 in words is "nineteen billion, two hundred ninety-eight million, eight hundred thirty-seven thousand, one hundred thirty-eight".