1074901981981 has 16 divisors (see below), whose sum is σ = 1092491628480. Its totient is φ = 1057452019200.

The previous prime is 1074901981949. The next prime is 1074901982017. The reversal of 1074901981981 is 1891891094701.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1074901981981 - 2⁵ = 1074901981949 is a prime.

It is a super-2 number, since 2×1074901981981² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1074901981081) 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, 93553485 + ... + 93564973.

It is an arithmetic number, because the mean of its divisors is an integer number (68280726780).

Almost surely, 2^{1074901981981} is an apocalyptic number.

It is an amenable number.

1074901981981 is a deficient number, since it is larger than the sum of its proper divisors (17589646499).

1074901981981 is a wasteful number, since it uses less digits than its factorization.

1074901981981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17436.

The product of its (nonzero) digits is 1306368, while the sum is 58.

The spelling of 1074901981981 in words is "one trillion, seventy-four billion, nine hundred one million, nine hundred eighty-one thousand, nine hundred eighty-one".