1145738972 has 36 divisors (see below), whose sum is σ = 2360531880. Its totient is φ = 485108064.

The previous prime is 1145738963. The next prime is 1145738977. The reversal of 1145738972 is 2798375411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145738977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18947 + ... + 51482.

It is an arithmetic number, because the mean of its divisors is an integer number (65570330).

Almost surely, 2^1145738972 is an apocalyptic number.

It is an amenable number.

1145738972 is an abundant number, since it is smaller than the sum of its proper divisors (1214792908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145738972 is a wasteful number, since it uses less digits than its factorization.

1145738972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70530 (or 70521 counting only the distinct ones).

The product of its digits is 423360, while the sum is 47.

The square root of 1145738972 is about 33848.7661813544. The cubic root of 1145738972 is about 1046.3939706822.

The spelling of 1145738972 in words is "one billion, one hundred forty-five million, seven hundred thirty-eight thousand, nine hundred seventy-two".