1377156323 has 4 divisors (see below), whose sum is σ = 1378620768. Its totient is φ = 1375691880.

The previous prime is 1377156289. The next prime is 1377156329. The reversal of 1377156323 is 3236517731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3236517731 = 163 ⋅19855937.

It is a cyclic number.

It is not a de Polignac number, because 1377156323 - 2¹⁶ = 1377090787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1377156329) 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, 730811 + ... + 732692.

It is an arithmetic number, because the mean of its divisors is an integer number (344655192).

Almost surely, 2^1377156323 is an apocalyptic number.

1377156323 is a deficient number, since it is larger than the sum of its proper divisors (1464445).

1377156323 is an equidigital number, since it uses as much as digits as its factorization.

1377156323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464444.

The product of its digits is 79380, while the sum is 38.

The square root of 1377156323 is about 37110.0568983665. The cubic root of 1377156323 is about 1112.5710288867.

The spelling of 1377156323 in words is "one billion, three hundred seventy-seven million, one hundred fifty-six thousand, three hundred twenty-three".