1156820691982 has 8 divisors (see below), whose sum is σ = 1826558987400. Its totient is φ = 547967696184.

The previous prime is 1156820691973. The next prime is 1156820691997. The reversal of 1156820691982 is 2891960286511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1156820691982² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15221324857 + ... + 15221324932.

It is an arithmetic number, because the mean of its divisors is an integer number (228319873425).

Almost surely, 2^{1156820691982} is an apocalyptic number.

1156820691982 is a deficient number, since it is larger than the sum of its proper divisors (669738295418).

1156820691982 is a wasteful number, since it uses less digits than its factorization.

1156820691982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30442649810.

The product of its (nonzero) digits is 3732480, while the sum is 58.

The spelling of 1156820691982 in words is "one trillion, one hundred fifty-six billion, eight hundred twenty million, six hundred ninety-one thousand, nine hundred eighty-two".