18994792646270 has 32 divisors (see below), whose sum is σ = 39610276026048. Its totient is φ = 6423288000768.

The previous prime is 18994792646237. The next prime is 18994792646273. The reversal of 18994792646270 is 7264629749981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18994792646273) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1858585169 + ... + 1858595388.

It is an arithmetic number, because the mean of its divisors is an integer number (1237821125814).

Almost surely, 2^{18994792646270} is an apocalyptic number.

18994792646270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18994792646270 is an abundant number, since it is smaller than the sum of its proper divisors (20615483379778).

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

18994792646270 is a wasteful number, since it uses less digits than its factorization.

18994792646270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717180644.

The product of its (nonzero) digits is 658409472, while the sum is 74.

The spelling of 18994792646270 in words is "eighteen trillion, nine hundred ninety-four billion, seven hundred ninety-two million, six hundred forty-six thousand, two hundred seventy".