1634505457 has 8 divisors (see below), whose sum is σ = 1852880960. Its totient is φ = 1429364880.

The previous prime is 1634505437. The next prime is 1634505487. The reversal of 1634505457 is 7545054361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1634505457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1634505427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3308469 + ... + 3308962.

It is an arithmetic number, because the mean of its divisors is an integer number (231610120).

Almost surely, 2^1634505457 is an apocalyptic number.

It is an amenable number.

1634505457 is a deficient number, since it is larger than the sum of its proper divisors (218375503).

1634505457 is a wasteful number, since it uses less digits than its factorization.

1634505457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6617463.

The product of its (nonzero) digits is 252000, while the sum is 40.

The square root of 1634505457 is about 40429.0175121781. The cubic root of 1634505457 is about 1177.9552486788.

The spelling of 1634505457 in words is "one billion, six hundred thirty-four million, five hundred five thousand, four hundred fifty-seven".