19364138312 has 8 divisors (see below), whose sum is σ = 36307759350. Its totient is φ = 9682069152.

The previous prime is 19364138309. The next prime is 19364138333. The reversal of 19364138312 is 21383146391.

It can be written as a sum of positive squares in only one way, i.e., 15019482916 + 4344655396 = 122554^2 + 65914^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 19364138312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210258637 + ... + 1210258652.

Almost surely, 2^19364138312 is an apocalyptic number.

It is an amenable number.

19364138312 is a deficient number, since it is larger than the sum of its proper divisors (16943621038).

19364138312 is a wasteful number, since it uses less digits than its factorization.

19364138312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420517295 (or 2420517291 counting only the distinct ones).

The product of its digits is 93312, while the sum is 41.

The spelling of 19364138312 in words is "nineteen billion, three hundred sixty-four million, one hundred thirty-eight thousand, three hundred twelve".