1905272163198 has 28 divisors (see below), whose sum is σ = 4284902213928. Its totient is φ = 635090720580.

The previous prime is 1905272163181. The next prime is 1905272163233. The reversal of 1905272163198 is 8913612725091.

It is a happy number.

1905272163198 is a `hidden beast` number, since 1 + 9 + 0 + 527 + 21 + 6 + 3 + 1 + 98 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 653384058 + ... + 653386973.

It is an arithmetic number, because the mean of its divisors is an integer number (153032221926).

Almost surely, 2^{1905272163198} is an apocalyptic number.

1905272163198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1905272163198 is an abundant number, since it is smaller than the sum of its proper divisors (2379630050730).

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

1905272163198 is an equidigital number, since it uses as much as digits as its factorization.

1905272163198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306771051 (or 1306771036 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 1905272163198 in words is "one trillion, nine hundred five billion, two hundred seventy-two million, one hundred sixty-three thousand, one hundred ninety-eight".