1148839972 has 48 divisors (see below), whose sum is σ = 2402104320. Its totient is φ = 470064672.

The previous prime is 1148839969. The next prime is 1148840029. The reversal of 1148839972 is 2799388411.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423043 + ... + 425749.

It is an arithmetic number, because the mean of its divisors is an integer number (50043840).

Almost surely, 2^1148839972 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 1148839972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1201052160).

1148839972 is an abundant number, since it is smaller than the sum of its proper divisors (1253264348).

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

1148839972 is a wasteful number, since it uses less digits than its factorization.

1148839972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400 (or 3398 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The square root of 1148839972 is about 33894.5419204922. The cubic root of 1148839972 is about 1047.3371595209.

The spelling of 1148839972 in words is "one billion, one hundred forty-eight million, eight hundred thirty-nine thousand, nine hundred seventy-two".