1161442646 has 32 divisors (see below), whose sum is σ = 2145927168. Its totient is φ = 459102240.

The previous prime is 1161442577. The next prime is 1161442687. The reversal of 1161442646 is 6462441611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382691 + ... + 385713.

It is an arithmetic number, because the mean of its divisors is an integer number (67060224).

Almost surely, 2^1161442646 is an apocalyptic number.

1161442646 is a deficient number, since it is larger than the sum of its proper divisors (984484522).

1161442646 is a wasteful number, since it uses less digits than its factorization.

1161442646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5156.

The product of its digits is 27648, while the sum is 35.

The square root of 1161442646 is about 34079.9449236644. The cubic root of 1161442646 is about 1051.1529726463.

The spelling of 1161442646 in words is "one billion, one hundred sixty-one million, four hundred forty-two thousand, six hundred forty-six".