1377887040 has 84 divisors (see below), whose sum is σ = 4739367204. Its totient is φ = 367435776.

The previous prime is 1377887033. The next prime is 1377887051. The reversal of 1377887040 is 407887731.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 211527936 + 1166359104 = 14544^2 + 34152^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236337 + ... + 242096.

Almost surely, 2^1377887040 is an apocalyptic number.

1377887040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1377887040 is an abundant number, since it is smaller than the sum of its proper divisors (3361480164).

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

1377887040 is a wasteful number, since it uses less digits than its factorization.

1377887040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478456 (or 478443 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The square root of 1377887040 is about 37119.9008619366. The cubic root of 1377887040 is about 1112.7677702456.

The spelling of 1377887040 in words is "one billion, three hundred seventy-seven million, eight hundred eighty-seven thousand, forty".