1377138069 has 12 divisors (see below), whose sum is σ = 2093894400. Its totient is φ = 869771304.

The previous prime is 1377138019. The next prime is 1377138101. The reversal of 1377138069 is 9608317731.

It is not a de Polignac number, because 1377138069 - 2⁷ = 1377137941 is a prime.

It is a super-2 number, since 2×1377138069² = 3793018522178097522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377138019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4026549 + ... + 4026890.

It is an arithmetic number, because the mean of its divisors is an integer number (174491200).

Almost surely, 2^1377138069 is an apocalyptic number.

1377138069 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1377138069 is a deficient number, since it is larger than the sum of its proper divisors (716756331).

1377138069 is a wasteful number, since it uses less digits than its factorization.

1377138069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8053464 (or 8053461 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 1377138069 is about 37109.8109534393. The cubic root of 1377138069 is about 1112.5661132111.

The spelling of 1377138069 in words is "one billion, three hundred seventy-seven million, one hundred thirty-eight thousand, sixty-nine".