1634653438 has 8 divisors (see below), whose sum is σ = 2674887480. Its totient is φ = 743024280.

The previous prime is 1634653421. The next prime is 1634653439. The reversal of 1634653438 is 8343564361.

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

It is a junction number, because it is equal to n+sod(n) for n = 1634653394 and 1634653403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634653439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37151193 + ... + 37151236.

It is an arithmetic number, because the mean of its divisors is an integer number (334360935).

Almost surely, 2^1634653438 is an apocalyptic number.

1634653438 is a deficient number, since it is larger than the sum of its proper divisors (1040234042).

1634653438 is a wasteful number, since it uses less digits than its factorization.

1634653438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74302442.

The product of its digits is 622080, while the sum is 43.

The square root of 1634653438 is about 40430.8476042736. The cubic root of 1634653438 is about 1177.9907965840.

The spelling of 1634653438 in words is "one billion, six hundred thirty-four million, six hundred fifty-three thousand, four hundred thirty-eight".