1121786507 has 2 divisors, whose sum is σ = 1121786508. Its totient is φ = 1121786506.

The previous prime is 1121786503. The next prime is 1121786579. The reversal of 1121786507 is 7056871211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121786507 - 2² = 1121786503 is a prime.

It is a super-2 number, since 2×1121786507² = 2516809934574522098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121786503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560893253 + 560893254.

It is an arithmetic number, because the mean of its divisors is an integer number (560893254).

Almost surely, 2^1121786507 is an apocalyptic number.

1121786507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121786507 is an equidigital number, since it uses as much as digits as its factorization.

1121786507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 38.

The square root of 1121786507 is about 33493.0814796131. The cubic root of 1121786507 is about 1039.0506953205.

The spelling of 1121786507 in words is "one billion, one hundred twenty-one million, seven hundred eighty-six thousand, five hundred seven".