1277631452 has 6 divisors (see below), whose sum is σ = 2235855048. Its totient is φ = 638815724.

The previous prime is 1277631403. The next prime is 1277631457. The reversal of 1277631452 is 2541367721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1277631457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159703928 + ... + 159703935.

It is an arithmetic number, because the mean of its divisors is an integer number (372642508).

Almost surely, 2^1277631452 is an apocalyptic number.

It is an amenable number.

1277631452 is a deficient number, since it is larger than the sum of its proper divisors (958223596).

1277631452 is a wasteful number, since it uses less digits than its factorization.

1277631452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319407867 (or 319407865 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 1277631452 is about 35743.9708482424. The cubic root of 1277631452 is about 1085.0969218351.

The spelling of 1277631452 in words is "one billion, two hundred seventy-seven million, six hundred thirty-one thousand, four hundred fifty-two".