1652391089 has 2 divisors, whose sum is σ = 1652391090. Its totient is φ = 1652391088.

The previous prime is 1652391053. The next prime is 1652391101. The reversal of 1652391089 is 9801932561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1445520400 + 206870689 = 38020^2 + 14383^2 .

It is a cyclic number.

It is not a de Polignac number, because 1652391089 - 2⁸ = 1652390833 is a prime.

It is a super-2 number, since 2×1652391089² = 5460792622013211842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1652391289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826195544 + 826195545.

It is an arithmetic number, because the mean of its divisors is an integer number (826195545).

Almost surely, 2^1652391089 is an apocalyptic number.

It is an amenable number.

1652391089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1652391089 is an equidigital number, since it uses as much as digits as its factorization.

1652391089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1652391089 is about 40649.6136390003. The cubic root of 1652391089 is about 1182.2362765762.

The spelling of 1652391089 in words is "one billion, six hundred fifty-two million, three hundred ninety-one thousand, eighty-nine".