1161402646 has 4 divisors (see below), whose sum is σ = 1742103972. Its totient is φ = 580701322.

The previous prime is 1161402637. The next prime is 1161402653. The reversal of 1161402646 is 6462041611.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1161402646² = 2697712212271602632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290350660 + ... + 290350663.

It is an arithmetic number, because the mean of its divisors is an integer number (435525993).

Almost surely, 2^1161402646 is an apocalyptic number.

1161402646 is a deficient number, since it is larger than the sum of its proper divisors (580701326).

1161402646 is an equidigital number, since it uses as much as digits as its factorization.

1161402646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580701325.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1161402646 is about 34079.3580632030. The cubic root of 1161402646 is about 1051.1409052972.

The spelling of 1161402646 in words is "one billion, one hundred sixty-one million, four hundred two thousand, six hundred forty-six".