1980460436 has 6 divisors (see below), whose sum is σ = 3465805770. Its totient is φ = 990230216.

The previous prime is 1980460423. The next prime is 1980460457. The reversal of 1980460436 is 6340640891.

It can be written as a sum of positive squares in only one way, i.e., 1874370436 + 106090000 = 43294^2 + 10300^2 .

It is a super-2 number, since 2×1980460436² = 7844447077122620192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1980460393 and 1980460402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247557551 + ... + 247557558.

It is an arithmetic number, because the mean of its divisors is an integer number (577634295).

Almost surely, 2^1980460436 is an apocalyptic number.

It is an amenable number.

1980460436 is a deficient number, since it is larger than the sum of its proper divisors (1485345334).

1980460436 is a wasteful number, since it uses less digits than its factorization.

1980460436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495115113 (or 495115111 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 1980460436 is about 44502.3643866256. The cubic root of 1980460436 is about 1255.8045635910.

The spelling of 1980460436 in words is "one billion, nine hundred eighty million, four hundred sixty thousand, four hundred thirty-six".