1902580049 has 2 divisors, whose sum is σ = 1902580050. Its totient is φ = 1902580048.

The previous prime is 1902580013. The next prime is 1902580091. The reversal of 1902580049 is 9400852091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1618050625 + 284529424 = 40225^2 + 16868^2 .

It is a cyclic number.

It is not a de Polignac number, because 1902580049 - 2¹² = 1902575953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1902579994 and 1902580021.

It is not a weakly prime, because it can be changed into another prime (1902580249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951290024 + 951290025.

It is an arithmetic number, because the mean of its divisors is an integer number (951290025).

Almost surely, 2^1902580049 is an apocalyptic number.

It is an amenable number.

1902580049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1902580049 is an equidigital number, since it uses as much as digits as its factorization.

1902580049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 1902580049 is about 43618.5745869807. The cubic root of 1902580049 is about 1239.1226991311.

The spelling of 1902580049 in words is "one billion, nine hundred two million, five hundred eighty thousand, forty-nine".