1980129831 has 8 divisors (see below), whose sum is σ = 2731213680. Its totient is φ = 1274566272.

The previous prime is 1980129803. The next prime is 1980129871. The reversal of 1980129831 is 1389210891.

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

It is not a de Polignac number, because 1980129831 - 2²³ = 1971741223 is a prime.

It is a super-2 number, since 2×1980129831² = 7841828295232177122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980129871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11379970 + ... + 11380143.

It is an arithmetic number, because the mean of its divisors is an integer number (341401710).

Almost surely, 2^1980129831 is an apocalyptic number.

1980129831 is a deficient number, since it is larger than the sum of its proper divisors (751083849).

1980129831 is a wasteful number, since it uses less digits than its factorization.

1980129831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22760145.

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 1980129831 is about 44498.6497660322. The cubic root of 1980129831 is about 1255.7346811259.

The spelling of 1980129831 in words is "one billion, nine hundred eighty million, one hundred twenty-nine thousand, eight hundred thirty-one".