1351980081 has 12 divisors (see below), whose sum is σ = 1953437200. Its totient is φ = 901053720.

The previous prime is 1351980031. The next prime is 1351980101. The reversal of 1351980081 is 1800891531.

It is not a de Polignac number, because 1351980081 - 2⁷ = 1351979953 is a prime.

It is a super-2 number, since 2×1351980081² = 3655700278841533122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351980001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12870 + ... + 53568.

Almost surely, 2^1351980081 is an apocalyptic number.

It is an amenable number.

1351980081 is a deficient number, since it is larger than the sum of its proper divisors (601457119).

1351980081 is a wasteful number, since it uses less digits than its factorization.

1351980081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44396 (or 44393 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The square root of 1351980081 is about 36769.2817580110. The cubic root of 1351980081 is about 1105.7495323508.

The spelling of 1351980081 in words is "one billion, three hundred fifty-one million, nine hundred eighty thousand, eighty-one".