1180820858 has 16 divisors (see below), whose sum is σ = 2033187264. Its totient is φ = 503835360.

The previous prime is 1180820857. The next prime is 1180820881. The reversal of 1180820858 is 8580280811.

It is not an unprimeable number, because it can be changed into a prime (1180820857) 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, 182603 + ... + 188958.

It is an arithmetic number, because the mean of its divisors is an integer number (127074204).

Almost surely, 2^1180820858 is an apocalyptic number.

1180820858 is a deficient number, since it is larger than the sum of its proper divisors (852366406).

1180820858 is a wasteful number, since it uses less digits than its factorization.

1180820858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371797.

The product of its (nonzero) digits is 40960, while the sum is 41.

The square root of 1180820858 is about 34363.0740475878. The cubic root of 1180820858 is about 1056.9667819501.

The spelling of 1180820858 in words is "one billion, one hundred eighty million, eight hundred twenty thousand, eight hundred fifty-eight".