19407378042 has 24 divisors (see below), whose sum is σ = 45283882644. Its totient is φ = 5971500864.

The previous prime is 19407377911. The next prime is 19407378071. The reversal of 19407378042 is 24087370491.

It can be written as a sum of positive squares in 2 ways, for example, as 18667483641 + 739894401 = 136629^2 + 27201^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41468523 + ... + 41468990.

Almost surely, 2^19407378042 is an apocalyptic number.

19407378042 is an abundant number, since it is smaller than the sum of its proper divisors (25876504602).

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

19407378042 is a wasteful number, since it uses less digits than its factorization.

19407378042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82937534 (or 82937531 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 19407378042 in words is "nineteen billion, four hundred seven million, three hundred seventy-eight thousand, forty-two".