19740631352 has 32 divisors (see below), whose sum is σ = 40067464080. Its totient is φ = 9063843840.

The previous prime is 19740631321. The next prime is 19740631411. The reversal of 19740631352 is 25313604791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471674 + ... + 511817.

Almost surely, 2^19740631352 is an apocalyptic number.

It is an amenable number.

19740631352 is an abundant number, since it is smaller than the sum of its proper divisors (20326832728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19740631352 is a wasteful number, since it uses less digits than its factorization.

19740631352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983703 (or 983699 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 19740631352 in words is "nineteen billion, seven hundred forty million, six hundred thirty-one thousand, three hundred fifty-two".