1291086104 has 48 divisors (see below), whose sum is σ = 3072028680. Its totient is φ = 503018880.

The previous prime is 1291086101. The next prime is 1291086179. The reversal of 1291086104 is 4016801921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291086101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145397 + ... + 154020.

Almost surely, 2^1291086104 is an apocalyptic number.

1291086104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1291086104 is an abundant number, since it is smaller than the sum of its proper divisors (1780942576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1291086104 is a wasteful number, since it uses less digits than its factorization.

1291086104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299448 (or 299437 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1291086104 is about 35931.6866289352. The cubic root of 1291086104 is about 1088.8926565251.

The spelling of 1291086104 in words is "one billion, two hundred ninety-one million, eighty-six thousand, one hundred four".