19266778130 has 32 divisors (see below), whose sum is σ = 36784931760. Its totient is φ = 7240591360.

The previous prime is 19266778087. The next prime is 19266778177. The reversal of 19266778130 is 3187766291.

It can be written as a sum of positive squares in 8 ways, for example, as 13553383561 + 5713394569 = 116419^2 + 75587^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2861 + ... + 196320.

Almost surely, 2^19266778130 is an apocalyptic number.

19266778130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19266778130 is a deficient number, since it is larger than the sum of its proper divisors (17518153630).

19266778130 is a wasteful number, since it uses less digits than its factorization.

19266778130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199774.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 19266778130 in words is "nineteen billion, two hundred sixty-six million, seven hundred seventy-eight thousand, one hundred thirty".