19874761234 has 32 divisors (see below), whose sum is σ = 32371009776. Its totient is φ = 9114746880.

The previous prime is 19874761189. The next prime is 19874761237. The reversal of 19874761234 is 43216747891.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 7656775009 + 12217986225 = 87503^2 + 110535^2 .

It is a super-2 number, since 2×19874761234² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19874761237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1354642 + ... + 1369234.

Almost surely, 2^19874761234 is an apocalyptic number.

19874761234 is a deficient number, since it is larger than the sum of its proper divisors (12496248542).

19874761234 is a wasteful number, since it uses less digits than its factorization.

19874761234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15630.

The product of its digits is 2032128, while the sum is 52.

The spelling of 19874761234 in words is "nineteen billion, eight hundred seventy-four million, seven hundred sixty-one thousand, two hundred thirty-four".