1145439504 has 240 divisors, whose sum is σ = 3646266624. Its totient is φ = 332640000.

The previous prime is 1145439499. The next prime is 1145439527. The reversal of 1145439504 is 4059345411.

It is a happy number.

1145439504 is a `hidden beast` number, since 1 + 145 + 4 + 3 + 9 + 504 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4563379 + ... + 4563629.

Almost surely, 2^1145439504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1145439504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1823133312).

1145439504 is an abundant number, since it is smaller than the sum of its proper divisors (2500827120).

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

1145439504 is a wasteful number, since it uses less digits than its factorization.

1145439504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1145439504 is about 33844.3422745959. The cubic root of 1145439504 is about 1046.3027955184.

The spelling of 1145439504 in words is "one billion, one hundred forty-five million, four hundred thirty-nine thousand, five hundred four".