1047775091 has 16 divisors (see below), whose sum is σ = 1150668288. Its totient is φ = 946183200.

The previous prime is 1047775087. The next prime is 1047775103. The reversal of 1047775091 is 1905777401.

It is a cyclic number.

It is not a de Polignac number, because 1047775091 - 2² = 1047775087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1047775021) 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, 1860776 + ... + 1861338.

It is an arithmetic number, because the mean of its divisors is an integer number (71916768).

Almost surely, 2^1047775091 is an apocalyptic number.

1047775091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1047775091 is a deficient number, since it is larger than the sum of its proper divisors (102893197).

1047775091 is a wasteful number, since it uses less digits than its factorization.

1047775091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402.

The product of its (nonzero) digits is 61740, while the sum is 41.

The square root of 1047775091 is about 32369.3541949789. The cubic root of 1047775091 is about 1015.6779477513.

The spelling of 1047775091 in words is "one billion, forty-seven million, seven hundred seventy-five thousand, ninety-one".