951984881 has 4 divisors (see below), whose sum is σ = 993375552. Its totient is φ = 910594212.

The previous prime is 951984871. The next prime is 951984889. The reversal of 951984881 is 188489159.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 188489159 = 4409 ⋅42751.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-951984881 is a prime.

It is a super-2 number, since 2×951984881² = 1812550427305168322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (951984889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20695301 + ... + 20695346.

It is an arithmetic number, because the mean of its divisors is an integer number (248343888).

Almost surely, 2^951984881 is an apocalyptic number.

It is an amenable number.

951984881 is a deficient number, since it is larger than the sum of its proper divisors (41390671).

951984881 is a wasteful number, since it uses less digits than its factorization.

951984881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41390670.

The product of its digits is 829440, while the sum is 53.

The square root of 951984881 is about 30854.2522353079. The cubic root of 951984881 is about 983.7317391895.

The spelling of 951984881 in words is "nine hundred fifty-one million, nine hundred eighty-four thousand, eight hundred eighty-one".