1161245146 has 16 divisors (see below), whose sum is σ = 1845253440. Its totient is φ = 546194880.

The previous prime is 1161245119. The next prime is 1161245149. The reversal of 1161245146 is 6415421611.

It is a super-2 number, since 2×1161245146² = 2696980578217122632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1161245149) 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, 71185 + ... + 85963.

It is an arithmetic number, because the mean of its divisors is an integer number (115328340).

Almost surely, 2^1161245146 is an apocalyptic number.

1161245146 is a deficient number, since it is larger than the sum of its proper divisors (684008294).

1161245146 is a wasteful number, since it uses less digits than its factorization.

1161245146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17109.

The product of its digits is 5760, while the sum is 31.

The square root of 1161245146 is about 34077.0472018924. The cubic root of 1161245146 is about 1051.0933874166.

Adding to 1161245146 its reverse (6415421611), we get a palindrome (7576666757).

The spelling of 1161245146 in words is "one billion, one hundred sixty-one million, two hundred forty-five thousand, one hundred forty-six".