19770190254 has 48 divisors (see below), whose sum is σ = 42988519392. Its totient is φ = 6566552064.

The previous prime is 19770190249. The next prime is 19770190259. The reversal of 19770190254 is 45209107791.

It is an interprime number because it is at equal distance from previous prime (19770190249) and next prime (19770190259).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19770190259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11277042 + ... + 11278794.

It is an arithmetic number, because the mean of its divisors is an integer number (895594154).

Almost surely, 2^19770190254 is an apocalyptic number.

19770190254 is an abundant number, since it is smaller than the sum of its proper divisors (23218329138).

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

19770190254 is a wasteful number, since it uses less digits than its factorization.

19770190254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641 (or 3638 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The spelling of 19770190254 in words is "nineteen billion, seven hundred seventy million, one hundred ninety thousand, two hundred fifty-four".