1890538151 has 2 divisors, whose sum is σ = 1890538152. Its totient is φ = 1890538150.

The previous prime is 1890538147. The next prime is 1890538241. The reversal of 1890538151 is 1518350981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1890538151 - 2² = 1890538147 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1890538099 and 1890538108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1890535151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945269075 + 945269076.

It is an arithmetic number, because the mean of its divisors is an integer number (945269076).

Almost surely, 2^1890538151 is an apocalyptic number.

1890538151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1890538151 is an equidigital number, since it uses as much as digits as its factorization.

1890538151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 41.

The square root of 1890538151 is about 43480.3191225639. The cubic root of 1890538151 is about 1236.5029266270.

The spelling of 1890538151 in words is "one billion, eight hundred ninety million, five hundred thirty-eight thousand, one hundred fifty-one".