1145740920 has 32 divisors (see below), whose sum is σ = 3437223120. Its totient is φ = 305530880.

The previous prime is 1145740889. The next prime is 1145740933. The reversal of 1145740920 is 290475411.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4773801 + ... + 4774040.

Almost surely, 2^1145740920 is an apocalyptic number.

1145740920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145740920 is an abundant number, since it is smaller than the sum of its proper divisors (2291482200).

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

1145740920 is a wasteful number, since it uses less digits than its factorization.

1145740920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9547855 (or 9547851 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1145740920 is about 33848.7949563939. The cubic root of 1145740920 is about 1046.3945637127.

The spelling of 1145740920 in words is "one billion, one hundred forty-five million, seven hundred forty thousand, nine hundred twenty".