1051749910638 has 40 divisors (see below), whose sum is σ = 2693370144432. Its totient is φ = 300499974144.

The previous prime is 1051749910637. The next prime is 1051749910681. The reversal of 1051749910638 is 8360199471501.

1051749910638 is a `hidden beast` number, since 1 + 0 + 5 + 17 + 499 + 106 + 38 = 666.

It is a super-2 number, since 2×1051749910638² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051749910637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 463733395 + ... + 463735662.

Almost surely, 2^{1051749910638} is an apocalyptic number.

1051749910638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1051749910638 is an abundant number, since it is smaller than the sum of its proper divisors (1641620233794).

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

1051749910638 is an equidigital number, since it uses as much as digits as its factorization.

1051749910638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927469078 (or 927469069 counting only the distinct ones).

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

The spelling of 1051749910638 in words is "one trillion, fifty-one billion, seven hundred forty-nine million, nine hundred ten thousand, six hundred thirty-eight".