3208157493 has 8 divisors (see below), whose sum is σ = 4282981728. Its totient is φ = 2136052464.

The previous prime is 3208157489. The next prime is 3208157501. The reversal of 3208157493 is 3947518023.

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

It is not a de Polignac number, because 3208157493 - 2² = 3208157489 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3208157423) 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, 677046 + ... + 681767.

It is an arithmetic number, because the mean of its divisors is an integer number (535372716).

Almost surely, 2^3208157493 is an apocalyptic number.

It is an amenable number.

3208157493 is a deficient number, since it is larger than the sum of its proper divisors (1074824235).

3208157493 is a wasteful number, since it uses less digits than its factorization.

3208157493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359603.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 3208157493 is about 56640.5993347528. The cubic root of 3208157493 is about 1474.8637228113.

The spelling of 3208157493 in words is "three billion, two hundred eight million, one hundred fifty-seven thousand, four hundred ninety-three".