1499778677 has 2 divisors, whose sum is σ = 1499778678. Its totient is φ = 1499778676.

The previous prime is 1499778629. The next prime is 1499778689. The reversal of 1499778677 is 7768779941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 810768676 + 689010001 = 28474^2 + 26249^2 .

It is a cyclic number.

It is not a de Polignac number, because 1499778677 - 2²⁶ = 1432669813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1499778617) 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 as a sum of consecutive naturals, namely, 749889338 + 749889339.

It is an arithmetic number, because the mean of its divisors is an integer number (749889339).

Almost surely, 2^1499778677 is an apocalyptic number.

It is an amenable number.

1499778677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1499778677 is an equidigital number, since it uses as much as digits as its factorization.

1499778677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37340352, while the sum is 65.

The square root of 1499778677 is about 38726.9760890261. The cubic root of 1499778677 is about 1144.6579394307.

The spelling of 1499778677 in words is "one billion, four hundred ninety-nine million, seven hundred seventy-eight thousand, six hundred seventy-seven".