1145642061 has 16 divisors (see below), whose sum is σ = 1566286848. Its totient is φ = 744510000.

The previous prime is 1145642051. The next prime is 1145642081. The reversal of 1145642061 is 1602465411.

It is not a de Polignac number, because 1145642061 - 2⁷ = 1145641933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145642021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19206 + ... + 51576.

It is an arithmetic number, because the mean of its divisors is an integer number (97892928).

Almost surely, 2^1145642061 is an apocalyptic number.

It is an amenable number.

1145642061 is a deficient number, since it is larger than the sum of its proper divisors (420644787).

1145642061 is a wasteful number, since it uses less digits than its factorization.

1145642061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32672.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1145642061 is about 33847.3346217985. The cubic root of 1145642061 is about 1046.3644671775.

The spelling of 1145642061 in words is "one billion, one hundred forty-five million, six hundred forty-two thousand, sixty-one".