1377738078 has 16 divisors (see below), whose sum is σ = 2757488016. Its totient is φ = 458910720.

The previous prime is 1377738049. The next prime is 1377738079. The reversal of 1377738078 is 8708377731.

It is a super-2 number, since 2×1377738078² = 3796324423142268168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1377738078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377738079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74851 + ... + 91422.

It is an arithmetic number, because the mean of its divisors is an integer number (172343001).

Almost surely, 2^1377738078 is an apocalyptic number.

1377738078 is an abundant number, since it is smaller than the sum of its proper divisors (1379749938).

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

1377738078 is a wasteful number, since it uses less digits than its factorization.

1377738078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167659.

The product of its (nonzero) digits is 1382976, while the sum is 51.

The square root of 1377738078 is about 37117.8943098878. The cubic root of 1377738078 is about 1112.7276687275.

The spelling of 1377738078 in words is "one billion, three hundred seventy-seven million, seven hundred thirty-eight thousand, seventy-eight".