1381302090 has 192 divisors, whose sum is σ = 4352624640. Its totient is φ = 296887680.

The previous prime is 1381302079. The next prime is 1381302113. The reversal of 1381302090 is 902031831.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1998645 + ... + 1999335.

It is an arithmetic number, because the mean of its divisors is an integer number (22669920).

Almost surely, 2^1381302090 is an apocalyptic number.

1381302090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1381302090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2176312320).

1381302090 is an abundant number, since it is smaller than the sum of its proper divisors (2971322550).

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

1381302090 is a wasteful number, since it uses less digits than its factorization.

1381302090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 894 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1381302090 is about 37165.8726522061. The cubic root of 1381302090 is about 1113.6863318440.

The spelling of 1381302090 in words is "one billion, three hundred eighty-one million, three hundred two thousand, ninety".