1263104139 has 16 divisors (see below), whose sum is σ = 1837860480. Its totient is φ = 765260160.

The previous prime is 1263104123. The next prime is 1263104153. The reversal of 1263104139 is 9314013621.

It is not a de Polignac number, because 1263104139 - 2⁴ = 1263104123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1263104119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149572 + ... + 157790.

It is an arithmetic number, because the mean of its divisors is an integer number (114866280).

Almost surely, 2^1263104139 is an apocalyptic number.

1263104139 is a deficient number, since it is larger than the sum of its proper divisors (574756341).

1263104139 is a wasteful number, since it uses less digits than its factorization.

1263104139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12890.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1263104139 is about 35540.1764064277. The cubic root of 1263104139 is about 1080.9685353152.

The spelling of 1263104139 in words is "one billion, two hundred sixty-three million, one hundred four thousand, one hundred thirty-nine".