1653398741 has 2 divisors, whose sum is σ = 1653398742. Its totient is φ = 1653398740.

The previous prime is 1653398737. The next prime is 1653398777. The reversal of 1653398741 is 1478933561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1417899025 + 235499716 = 37655^2 + 15346^2 .

It is a cyclic number.

It is not a de Polignac number, because 1653398741 - 2² = 1653398737 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1653398701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826699370 + 826699371.

It is an arithmetic number, because the mean of its divisors is an integer number (826699371).

Almost surely, 2^1653398741 is an apocalyptic number.

It is an amenable number.

1653398741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1653398741 is an equidigital number, since it uses as much as digits as its factorization.

1653398741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 47.

The square root of 1653398741 is about 40662.0061113566. The cubic root of 1653398741 is about 1182.4765426739.

The spelling of 1653398741 in words is "one billion, six hundred fifty-three million, three hundred ninety-eight thousand, seven hundred forty-one".