1980827542 has 16 divisors (see below), whose sum is σ = 3080676240. Its totient is φ = 954090592.

The previous prime is 1980827483. The next prime is 1980827543. The reversal of 1980827542 is 2457280891.

It is a super-2 number, since 2×1980827542² = 7847355502291523528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1980827492 and 1980827501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980827543) 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, 12853 + ... + 64240.

It is an arithmetic number, because the mean of its divisors is an integer number (192542265).

Almost surely, 2^1980827542 is an apocalyptic number.

1980827542 is a deficient number, since it is larger than the sum of its proper divisors (1099848698).

1980827542 is a wasteful number, since it uses less digits than its factorization.

1980827542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77567.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 1980827542 is about 44506.4887628759. The cubic root of 1980827542 is about 1255.8821524351.

The spelling of 1980827542 in words is "one billion, nine hundred eighty million, eight hundred twenty-seven thousand, five hundred forty-two".