1081901390 has 8 divisors (see below), whose sum is σ = 1947422520. Its totient is φ = 432760552.

The previous prime is 1081901389. The next prime is 1081901411. The reversal of 1081901390 is 931091801.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54095060 + ... + 54095079.

It is an arithmetic number, because the mean of its divisors is an integer number (243427815).

Almost surely, 2^1081901390 is an apocalyptic number.

1081901390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1081901390 is a deficient number, since it is larger than the sum of its proper divisors (865521130).

1081901390 is a wasteful number, since it uses less digits than its factorization.

1081901390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108190146.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 1081901390 is about 32892.2694565152. The cubic root of 1081901390 is about 1026.5873133745.

The spelling of 1081901390 in words is "one billion, eighty-one million, nine hundred one thousand, three hundred ninety".