3949374618 has 192 divisors, whose sum is σ = 11381212800. Its totient is φ = 1005903360.

The previous prime is 3949374617. The next prime is 3949374623. The reversal of 3949374618 is 8164739493.

It is a happy number.

3949374618 is a `hidden beast` number, since 3 + 94 + 93 + 7 + 461 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (3949374617) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 852348 + ... + 856968.

It is an arithmetic number, because the mean of its divisors is an integer number (59277150).

Almost surely, 2^3949374618 is an apocalyptic number.

3949374618 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3949374618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5690606400).

3949374618 is an abundant number, since it is smaller than the sum of its proper divisors (7431838182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3949374618 is a wasteful number, since it uses less digits than its factorization.

3949374618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4682 (or 4669 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 3949374618 is about 62844.0499808852. The cubic root of 3949374618 is about 1580.6757001477.

The spelling of 3949374618 in words is "three billion, nine hundred forty-nine million, three hundred seventy-four thousand, six hundred eighteen".