1981310795 has 8 divisors (see below), whose sum is σ = 2378173824. Its totient is φ = 1584648064.

The previous prime is 1981310777. The next prime is 1981310797. The reversal of 1981310795 is 5970131891.

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

It is a cyclic number.

It is not a de Polignac number, because 1981310795 - 2⁶ = 1981310731 is a prime.

It is a super-3 number, since 3×1981310795³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1981310797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27374 + ... + 68643.

It is an arithmetic number, because the mean of its divisors is an integer number (297271728).

Almost surely, 2^1981310795 is an apocalyptic number.

1981310795 is a deficient number, since it is larger than the sum of its proper divisors (396863029).

1981310795 is an equidigital number, since it uses as much as digits as its factorization.

1981310795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100149.

The product of its (nonzero) digits is 68040, while the sum is 44.

The square root of 1981310795 is about 44511.9174491506. The cubic root of 1981310795 is about 1255.9842746469.

The spelling of 1981310795 in words is "one billion, nine hundred eighty-one million, three hundred ten thousand, seven hundred ninety-five".