1379288890 has 32 divisors (see below), whose sum is σ = 2928927744. Its totient is φ = 457643520.

The previous prime is 1379288879. The next prime is 1379288891. The reversal of 1379288890 is 988829731.

It is not an unprimeable number, because it can be changed into a prime (1379288891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315639 + ... + 319978.

It is an arithmetic number, because the mean of its divisors is an integer number (91528992).

Almost surely, 2^1379288890 is an apocalyptic number.

1379288890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1379288890 is an abundant number, since it is smaller than the sum of its proper divisors (1549638854).

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

1379288890 is a wasteful number, since it uses less digits than its factorization.

1379288890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635662.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The square root of 1379288890 is about 37138.7787898310. The cubic root of 1379288890 is about 1113.1450156780.

The spelling of 1379288890 in words is "one billion, three hundred seventy-nine million, two hundred eighty-eight thousand, eight hundred ninety".