3958451965 has 8 divisors (see below), whose sum is σ = 5115538008. Its totient is φ = 2923164480.

The previous prime is 3958451929. The next prime is 3958451971. The reversal of 3958451965 is 5691548593.

It can be written as a sum of positive squares in 4 ways, for example, as 51451929 + 3907000036 = 7173^2 + 62506^2 .

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

It is not a de Polignac number, because 3958451965 - 2⁷ = 3958451837 is a prime.

It is a super-2 number, since 2×3958451965² = 31338683918424722450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30449566 + ... + 30449695.

It is an arithmetic number, because the mean of its divisors is an integer number (639442251).

Almost surely, 2^3958451965 is an apocalyptic number.

It is an amenable number.

3958451965 is a deficient number, since it is larger than the sum of its proper divisors (1157086043).

3958451965 is a wasteful number, since it uses less digits than its factorization.

3958451965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60899279.

The product of its digits is 5832000, while the sum is 55.

The square root of 3958451965 is about 62916.2297424123. The cubic root of 3958451965 is about 1581.8857957838.

The spelling of 3958451965 in words is "three billion, nine hundred fifty-eight million, four hundred fifty-one thousand, nine hundred sixty-five".