1634693424 has 160 divisors (see below), whose sum is σ = 5471316480. Its totient is φ = 408416256.

The previous prime is 1634693419. The next prime is 1634693441. The reversal of 1634693424 is 4243964361.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73144 + ... + 92840.

It is an arithmetic number, because the mean of its divisors is an integer number (34195728).

Almost surely, 2^1634693424 is an apocalyptic number.

1634693424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1634693424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2735658240).

1634693424 is an abundant number, since it is smaller than the sum of its proper divisors (3836623056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1634693424 is a wasteful number, since it uses less digits than its factorization.

1634693424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19747 (or 19741 counting only the distinct ones).

The product of its digits is 373248, while the sum is 42.

The square root of 1634693424 is about 40431.3420999106. The cubic root of 1634693424 is about 1178.0004016283. Note that the first 3 decimals are identical.

The spelling of 1634693424 in words is "one billion, six hundred thirty-four million, six hundred ninety-three thousand, four hundred twenty-four".