19433728532 has 6 divisors (see below), whose sum is σ = 34009024938. Its totient is φ = 9716864264.

The previous prime is 19433728529. The next prime is 19433728541. The reversal of 19433728532 is 23582733491.

It can be written as a sum of positive squares in only one way, i.e., 19217167876 + 216560656 = 138626^2 + 14716^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2429216063 + ... + 2429216070.

It is an arithmetic number, because the mean of its divisors is an integer number (5668170823).

Almost surely, 2^19433728532 is an apocalyptic number.

It is an amenable number.

19433728532 is a deficient number, since it is larger than the sum of its proper divisors (14575296406).

19433728532 is a wasteful number, since it uses less digits than its factorization.

19433728532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858432137 (or 4858432135 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

The spelling of 19433728532 in words is "nineteen billion, four hundred thirty-three million, seven hundred twenty-eight thousand, five hundred thirty-two".