1377657133 has 2 divisors, whose sum is σ = 1377657134. Its totient is φ = 1377657132.

The previous prime is 1377657121. The next prime is 1377657161. The reversal of 1377657133 is 3317567731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 941139684 + 436517449 = 30678^2 + 20893^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377657133 - 2¹⁷ = 1377526061 is a prime.

It is a super-2 number, since 2×1377657133² = 3795878352211559378, 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 1377657133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1377657163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688828566 + 688828567.

It is an arithmetic number, because the mean of its divisors is an integer number (688828567).

Almost surely, 2^1377657133 is an apocalyptic number.

It is an amenable number.

1377657133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377657133 is an equidigital number, since it uses as much as digits as its factorization.

1377657133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 277830, while the sum is 43.

The square root of 1377657133 is about 37116.8039168245. The cubic root of 1377657133 is about 1112.7058766064.

The spelling of 1377657133 in words is "one billion, three hundred seventy-seven million, six hundred fifty-seven thousand, one hundred thirty-three".