1377988018 has 32 divisors (see below), whose sum is σ = 2307191040. Its totient is φ = 611880960.

The previous prime is 1377988013. The next prime is 1377988033. The reversal of 1377988018 is 8108897731.

It is not an unprimeable number, because it can be changed into a prime (1377988013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 794280 + ... + 796012.

It is an arithmetic number, because the mean of its divisors is an integer number (72099720).

Almost surely, 2^1377988018 is an apocalyptic number.

1377988018 is a deficient number, since it is larger than the sum of its proper divisors (929203022).

1377988018 is a wasteful number, since it uses less digits than its factorization.

1377988018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562.

The product of its (nonzero) digits is 677376, while the sum is 52.

The square root of 1377988018 is about 37121.2609969004. The cubic root of 1377988018 is about 1112.7949525220.

The spelling of 1377988018 in words is "one billion, three hundred seventy-seven million, nine hundred eighty-eight thousand, eighteen".