1308478077 has 8 divisors (see below), whose sum is σ = 1938486080. Its totient is φ = 872318700.

The previous prime is 1308478063. The next prime is 1308478081. The reversal of 1308478077 is 7708748031.

It is a happy number.

It is not a de Polignac number, because 1308478077 - 2⁷ = 1308477949 is a prime.

It is a super-2 number, since 2×1308478077² = 3424229755979235858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308478037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24231049 + ... + 24231102.

It is an arithmetic number, because the mean of its divisors is an integer number (242310760).

Almost surely, 2^1308478077 is an apocalyptic number.

It is an amenable number.

1308478077 is a deficient number, since it is larger than the sum of its proper divisors (630008003).

1308478077 is an equidigital number, since it uses as much as digits as its factorization.

1308478077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48462160 (or 48462154 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The square root of 1308478077 is about 36172.8914658477. The cubic root of 1308478077 is about 1093.7602858483.

The spelling of 1308478077 in words is "one billion, three hundred eight million, four hundred seventy-eight thousand, seventy-seven".