1390881011 has 8 divisors (see below), whose sum is σ = 1529742144. Its totient is φ = 1256572800.

The previous prime is 1390880957. The next prime is 1390881017. The reversal of 1390881011 is 1101880931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1390881011 - 2²⁶ = 1323772147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1390881017) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1137590 + ... + 1138811.

It is an arithmetic number, because the mean of its divisors is an integer number (191217768).

Almost surely, 2^1390881011 is an apocalyptic number.

1390881011 is a deficient number, since it is larger than the sum of its proper divisors (138861133).

1390881011 is a wasteful number, since it uses less digits than its factorization.

1390881011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276461.

The product of its (nonzero) digits is 1728, while the sum is 32.

The square root of 1390881011 is about 37294.5171707585. The cubic root of 1390881011 is about 1116.2547655049.

The spelling of 1390881011 in words is "one billion, three hundred ninety million, eight hundred eighty-one thousand, eleven".