4018978677 has 40 divisors (see below), whose sum is σ = 6268682816. Its totient is φ = 2290208256.

The previous prime is 4018978661. The next prime is 4018978699. The reversal of 4018978677 is 7768798104.

It is a happy number.

It is not a de Polignac number, because 4018978677 - 2⁴ = 4018978661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4018978657) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4155648 + ... + 4156614.

Almost surely, 2^4018978677 is an apocalyptic number.

It is an amenable number.

4018978677 is a deficient number, since it is larger than the sum of its proper divisors (2249704139).

4018978677 is an frugal number, since it uses more digits than its factorization.

4018978677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1554 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 57.

The square root of 4018978677 is about 63395.4152679829. The cubic root of 4018978677 is about 1589.9076561219.

The spelling of 4018978677 in words is "four billion, eighteen million, nine hundred seventy-eight thousand, six hundred seventy-seven".