1981962095 has 16 divisors (see below), whose sum is σ = 2484518400. Its totient is φ = 1514947104.

The previous prime is 1981962071. The next prime is 1981962107. The reversal of 1981962095 is 5902691891.

It is a cyclic number.

It is not a de Polignac number, because 1981962095 - 2¹⁰ = 1981961071 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99806 + ... + 118004.

It is an arithmetic number, because the mean of its divisors is an integer number (155282400).

Almost surely, 2^1981962095 is an apocalyptic number.

1981962095 is a deficient number, since it is larger than the sum of its proper divisors (502556305).

1981962095 is a wasteful number, since it uses less digits than its factorization.

1981962095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19174.

The product of its (nonzero) digits is 349920, while the sum is 50.

The square root of 1981962095 is about 44519.2328662568. The cubic root of 1981962095 is about 1256.1218826962.

The spelling of 1981962095 in words is "one billion, nine hundred eighty-one million, nine hundred sixty-two thousand, ninety-five".