1377240016 has 20 divisors (see below), whose sum is σ = 2669256612. Its totient is φ = 688399616.

The previous prime is 1377239951. The next prime is 1377240017. The reversal of 1377240016 is 6100427731.

It can be written as a sum of positive squares in 2 ways, for example, as 795465616 + 581774400 = 28204^2 + 24120^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1377240016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377240017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45510 + ... + 69466.

Almost surely, 2^1377240016 is an apocalyptic number.

1377240016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1377240016 is a deficient number, since it is larger than the sum of its proper divisors (1292016596).

1377240016 is a wasteful number, since it uses less digits than its factorization.

1377240016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27558 (or 27552 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 1377240016 is about 37111.1845135668. The cubic root of 1377240016 is about 1112.5935662751.

Adding to 1377240016 its reverse (6100427731), we get a palindrome (7477667747).

The spelling of 1377240016 in words is "one billion, three hundred seventy-seven million, two hundred forty thousand, sixteen".