1849751641 has 2 divisors, whose sum is σ = 1849751642. Its totient is φ = 1849751640.

The previous prime is 1849751639. The next prime is 1849751653. The reversal of 1849751641 is 1461579481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1041998400 + 807753241 = 32280^2 + 28421^2 .

It is a cyclic number.

It is not a de Polignac number, because 1849751641 - 2¹ = 1849751639 is a prime.

It is a super-2 number, since 2×1849751641² = 6843162266764385762, which contains 22 as substring.

Together with 1849751639, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1849751591 and 1849751600.

It is not a weakly prime, because it can be changed into another prime (1849751621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 924875820 + 924875821.

It is an arithmetic number, because the mean of its divisors is an integer number (924875821).

Almost surely, 2^1849751641 is an apocalyptic number.

It is an amenable number.

1849751641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1849751641 is an equidigital number, since it uses as much as digits as its factorization.

1849751641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 46.

The square root of 1849751641 is about 43008.7391235781. The cubic root of 1849751641 is about 1227.5460893619.

The spelling of 1849751641 in words is "one billion, eight hundred forty-nine million, seven hundred fifty-one thousand, six hundred forty-one".