1045653491 has 2 divisors, whose sum is σ = 1045653492. Its totient is φ = 1045653490.

The previous prime is 1045653487. The next prime is 1045653503. The reversal of 1045653491 is 1943565401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1045653491 - 2² = 1045653487 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1045653431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522826745 + 522826746.

It is an arithmetic number, because the mean of its divisors is an integer number (522826746).

Almost surely, 2^1045653491 is an apocalyptic number.

1045653491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045653491 is an equidigital number, since it uses as much as digits as its factorization.

1045653491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 1045653491 is about 32336.5658504424. The cubic root of 1045653491 is about 1014.9919486205.

The spelling of 1045653491 in words is "one billion, forty-five million, six hundred fifty-three thousand, four hundred ninety-one".