3891466357 has 2 divisors, whose sum is σ = 3891466358. Its totient is φ = 3891466356.

The previous prime is 3891466343. The next prime is 3891466409. The reversal of 3891466357 is 7536641983.

It is a happy number.

It is an a-pointer prime, because the next prime (3891466409) can be obtained adding 3891466357 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2480637636 + 1410828721 = 49806^2 + 37561^2 .

It is a cyclic number.

It is not a de Polignac number, because 3891466357 - 2²³ = 3883077749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3891476357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1945733178 + 1945733179.

It is an arithmetic number, because the mean of its divisors is an integer number (1945733179).

Almost surely, 2^3891466357 is an apocalyptic number.

It is an amenable number.

3891466357 is a deficient number, since it is larger than the sum of its proper divisors (1).

3891466357 is an equidigital number, since it uses as much as digits as its factorization.

3891466357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 52.

The square root of 3891466357 is about 62381.6187430240. The cubic root of 3891466357 is about 1572.9120035452.

The spelling of 3891466357 in words is "three billion, eight hundred ninety-one million, four hundred sixty-six thousand, three hundred fifty-seven".