1850767481 has 2 divisors, whose sum is σ = 1850767482. Its totient is φ = 1850767480.

The previous prime is 1850767463. The next prime is 1850767489. The reversal of 1850767481 is 1847670581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1058851600 + 791915881 = 32540^2 + 28141^2 .

It is an emirp because it is prime and its reverse (1847670581) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1850767481 is a prime.

It is a super-2 number, since 2×1850767481² = 6850680537454170722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1850767489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 925383740 + 925383741.

It is an arithmetic number, because the mean of its divisors is an integer number (925383741).

Almost surely, 2^1850767481 is an apocalyptic number.

It is an amenable number.

1850767481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1850767481 is an equidigital number, since it uses as much as digits as its factorization.

1850767481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 47.

The square root of 1850767481 is about 43020.5471954972. The cubic root of 1850767481 is about 1227.7707613645.

The spelling of 1850767481 in words is "one billion, eight hundred fifty million, seven hundred sixty-seven thousand, four hundred eighty-one".