1071980389 has 16 divisors (see below), whose sum is σ = 1176174720. Its totient is φ = 973748160.

The previous prime is 1071980387. The next prime is 1071980417. The reversal of 1071980389 is 9830891701.

It is a cyclic number.

It is not a de Polignac number, because 1071980389 - 2¹ = 1071980387 is a prime.

It is a super-2 number, since 2×1071980389² = 2298283908801182642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071980387) 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, 27514 + ... + 53860.

It is an arithmetic number, because the mean of its divisors is an integer number (73510920).

Almost surely, 2^1071980389 is an apocalyptic number.

It is an amenable number.

1071980389 is a deficient number, since it is larger than the sum of its proper divisors (104194331).

1071980389 is a wasteful number, since it uses less digits than its factorization.

1071980389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26460.

The product of its (nonzero) digits is 108864, while the sum is 46.

The square root of 1071980389 is about 32741.1116029985. Note that the first 3 decimals coincide. The cubic root of 1071980389 is about 1023.4397484242.

The spelling of 1071980389 in words is "one billion, seventy-one million, nine hundred eighty thousand, three hundred eighty-nine".