19378155042 has 24 divisors (see below), whose sum is σ = 43541040816. Its totient is φ = 6459384852.

The previous prime is 19378155011. The next prime is 19378155073. The reversal of 19378155042 is 24055187391.

19378155042 is a `hidden beast` number, since 1 + 93 + 7 + 8 + 1 + 550 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (19378155011) and next prime (19378155073).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19935888 + ... + 19936859.

It is an arithmetic number, because the mean of its divisors is an integer number (1814210034).

Almost surely, 2^19378155042 is an apocalyptic number.

19378155042 is an abundant number, since it is smaller than the sum of its proper divisors (24162885774).

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

19378155042 is an equidigital number, since it uses as much as digits as its factorization.

19378155042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39872764 (or 39872752 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 19378155042 in words is "nineteen billion, three hundred seventy-eight million, one hundred fifty-five thousand, forty-two".