1981962030 has 32 divisors (see below), whose sum is σ = 4846461984. Its totient is φ = 518550656.

The previous prime is 1981962019. The next prime is 1981962061. The reversal of 1981962030 is 302691891.

It is a self number, because there is not a number n which added to its sum of digits gives 1981962030.

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, 621669 + ... + 624848.

It is an arithmetic number, because the mean of its divisors is an integer number (151451937).

Almost surely, 2^1981962030 is an apocalyptic number.

1981962030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1981962030 is an abundant number, since it is smaller than the sum of its proper divisors (2864499954).

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

1981962030 is a wasteful number, since it uses less digits than its factorization.

1981962030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246580.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1981962030 is about 44519.2321362352. The cubic root of 1981962030 is about 1256.1218689644.

The spelling of 1981962030 in words is "one billion, nine hundred eighty-one million, nine hundred sixty-two thousand, thirty".