1145890340 has 48 divisors (see below), whose sum is σ = 2844979200. Its totient is φ = 379327872.

The previous prime is 1145890313. The next prime is 1145890363. The reversal of 1145890340 is 430985411.

Together with 1699088859 it forms a betrothed pair.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1145890340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137060 + ... + 145179.

It is an arithmetic number, because the mean of its divisors is an integer number (59270400).

Almost surely, 2^1145890340 is an apocalyptic number.

1145890340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145890340 is an abundant number, since it is smaller than the sum of its proper divisors (1699088860).

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

1145890340 is a wasteful number, since it uses less digits than its factorization.

1145890340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282284 (or 282282 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1145890340 is about 33851.0020531151. The cubic root of 1145890340 is about 1046.4400497024.

The spelling of 1145890340 in words is "one billion, one hundred forty-five million, eight hundred ninety thousand, three hundred forty".