1145630987 has 6 divisors (see below), whose sum is σ = 1167657372. Its totient is φ = 1124012552.

The previous prime is 1145630971. The next prime is 1145631001. The reversal of 1145630987 is 7890365411.

It is not a de Polignac number, because 1145630987 - 2⁴ = 1145630971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145633987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201113 + ... + 206730.

It is an arithmetic number, because the mean of its divisors is an integer number (194609562).

Almost surely, 2^1145630987 is an apocalyptic number.

1145630987 is a deficient number, since it is larger than the sum of its proper divisors (22026385).

1145630987 is an frugal number, since it uses more digits than its factorization.

1145630987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407949 (or 407896 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1145630987 is about 33847.1710339284. The cubic root of 1145630987 is about 1046.3610957122.

The spelling of 1145630987 in words is "one billion, one hundred forty-five million, six hundred thirty thousand, nine hundred eighty-seven".