19402493732 has 48 divisors (see below), whose sum is σ = 36682813440. Its totient is φ = 8952037248.

The previous prime is 19402493731. The next prime is 19402493783. The reversal of 19402493732 is 23739420491.

It is not an unprimeable number, because it can be changed into a prime (19402493731) 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, 4434698 + ... + 4439070.

It is an arithmetic number, because the mean of its divisors is an integer number (764225280).

Almost surely, 2^19402493732 is an apocalyptic number.

It is an amenable number.

19402493732 is a deficient number, since it is larger than the sum of its proper divisors (17280319708).

19402493732 is a wasteful number, since it uses less digits than its factorization.

19402493732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6092 (or 6090 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 19402493732 in words is "nineteen billion, four hundred two million, four hundred ninety-three thousand, seven hundred thirty-two".