1980467537 has 2 divisors, whose sum is σ = 1980467538. Its totient is φ = 1980467536.

The previous prime is 1980467521. The next prime is 1980467549. The reversal of 1980467537 is 7357640891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1063346881 + 917120656 = 32609^2 + 30284^2 .

It is a cyclic number.

It is not a de Polignac number, because 1980467537 - 2⁴ = 1980467521 is a prime.

It is a super-2 number, since 2×1980467537² = 7844503330221692738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1980467837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990233768 + 990233769.

It is an arithmetic number, because the mean of its divisors is an integer number (990233769).

Almost surely, 2^1980467537 is an apocalyptic number.

It is an amenable number.

1980467537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980467537 is an equidigital number, since it uses as much as digits as its factorization.

1980467537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 1980467537 is about 44502.4441688319. Note that the first 3 decimals coincide. The cubic root of 1980467537 is about 1255.8060644974.

The spelling of 1980467537 in words is "one billion, nine hundred eighty million, four hundred sixty-seven thousand, five hundred thirty-seven".