1980950597 has 4 divisors (see below), whose sum is σ = 1981076076. Its totient is φ = 1980825120.

The previous prime is 1980950527. The next prime is 1980950611. The reversal of 1980950597 is 7950590891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1271207716 + 709742881 = 35654^2 + 26641^2 .

It is a cyclic number.

It is not a de Polignac number, because 1980950597 - 2¹⁶ = 1980885061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980950527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34958 + ... + 71999.

It is an arithmetic number, because the mean of its divisors is an integer number (495269019).

Almost surely, 2^1980950597 is an apocalyptic number.

It is an amenable number.

1980950597 is a deficient number, since it is larger than the sum of its proper divisors (125479).

1980950597 is a wasteful number, since it uses less digits than its factorization.

1980950597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125478.

The product of its (nonzero) digits is 1020600, while the sum is 53.

The square root of 1980950597 is about 44507.8711802755. The cubic root of 1980950597 is about 1255.9081582962.

The spelling of 1980950597 in words is "one billion, nine hundred eighty million, nine hundred fifty thousand, five hundred ninety-seven".