1167643275438 has 32 divisors (see below), whose sum is σ = 2415936585600. Its totient is φ = 375774118496.

The previous prime is 1167643275437. The next prime is 1167643275451. The reversal of 1167643275438 is 8345723467611.

It is a super-2 number, since 2×1167643275438² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1167643275437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3483145 + ... + 3803627.

It is an arithmetic number, because the mean of its divisors is an integer number (75498018300).

Almost surely, 2^{1167643275438} is an apocalyptic number.

1167643275438 is an abundant number, since it is smaller than the sum of its proper divisors (1248293310162).

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

1167643275438 is a wasteful number, since it uses less digits than its factorization.

1167643275438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341456.

The product of its digits is 20321280, while the sum is 57.

The spelling of 1167643275438 in words is "one trillion, one hundred sixty-seven billion, six hundred forty-three million, two hundred seventy-five thousand, four hundred thirty-eight".