1139951328 has 48 divisors (see below), whose sum is σ = 3061973376. Its totient is φ = 371145600.

The previous prime is 1139951317. The next prime is 1139951339. The reversal of 1139951328 is 8231599311.

It is an interprime number because it is at equal distance from previous prime (1139951317) and next prime (1139951339).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1139951328.

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, 133948 + ... + 142203.

It is an arithmetic number, because the mean of its divisors is an integer number (63791112).

Almost surely, 2^1139951328 is an apocalyptic number.

It is an amenable number.

1139951328 is an abundant number, since it is smaller than the sum of its proper divisors (1922022048).

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

1139951328 is a wasteful number, since it uses less digits than its factorization.

1139951328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276207 (or 276199 counting only the distinct ones).

The product of its digits is 58320, while the sum is 42.

The square root of 1139951328 is about 33763.1652544604. The cubic root of 1139951328 is about 1044.6290596782.

The spelling of 1139951328 in words is "one billion, one hundred thirty-nine million, nine hundred fifty-one thousand, three hundred twenty-eight".