3951342145 has 4 divisors (see below), whose sum is σ = 4741610580. Its totient is φ = 3161073712.

The previous prime is 3951342107. The next prime is 3951342151. The reversal of 3951342145 is 5412431593.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2690808129 + 1260534016 = 51873^2 + 35504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3951342145 is a prime.

It is a super-2 number, since 2×3951342145² = 31226209493706402050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395134210 + ... + 395134219.

It is an arithmetic number, because the mean of its divisors is an integer number (1185402645).

Almost surely, 2^3951342145 is an apocalyptic number.

It is an amenable number.

3951342145 is a deficient number, since it is larger than the sum of its proper divisors (790268435).

3951342145 is an equidigital number, since it uses as much as digits as its factorization.

3951342145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790268434.

The product of its digits is 64800, while the sum is 37.

The square root of 3951342145 is about 62859.7020753360. The cubic root of 3951342145 is about 1580.9381472526.

The spelling of 3951342145 in words is "three billion, nine hundred fifty-one million, three hundred forty-two thousand, one hundred forty-five".