19512190436 has 24 divisors (see below), whose sum is σ = 36924201216. Its totient is φ = 8986839680.

The previous prime is 19512190427. The next prime is 19512190457. The reversal of 19512190436 is 63409121591.

It is a super-2 number, since 2×19512190436² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19512190393 and 19512190402.

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, 3049400 + ... + 3055791.

It is an arithmetic number, because the mean of its divisors is an integer number (1538508384).

Almost surely, 2^19512190436 is an apocalyptic number.

It is an amenable number.

19512190436 is a deficient number, since it is larger than the sum of its proper divisors (17412010780).

19512190436 is a wasteful number, since it uses less digits than its factorization.

19512190436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105259 (or 6105257 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 19512190436 in words is "nineteen billion, five hundred twelve million, one hundred ninety thousand, four hundred thirty-six".