1139666490 has 32 divisors (see below), whose sum is σ = 3039111360. Its totient is φ = 303910992.

The previous prime is 1139666471. The next prime is 1139666503. The reversal of 1139666490 is 946669311.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2110224 + ... + 2110763.

It is an arithmetic number, because the mean of its divisors is an integer number (94972230).

Almost surely, 2^1139666490 is an apocalyptic number.

1139666490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1139666490 is an abundant number, since it is smaller than the sum of its proper divisors (1899444870).

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

1139666490 is a wasteful number, since it uses less digits than its factorization.

1139666490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221003 (or 4220997 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 1139666490 is about 33758.9468141410. The cubic root of 1139666490 is about 1044.5420457765.

The spelling of 1139666490 in words is "one billion, one hundred thirty-nine million, six hundred sixty-six thousand, four hundred ninety".