1993634 has 16 divisors (see below), whose sum is σ = 3180600. Its totient is φ = 935424.

The previous prime is 1993633. The next prime is 1993637. The reversal of 1993634 is 4363991.

It can be written as a sum of positive squares in 4 ways, for example, as 1575025 + 418609 = 1255^2 + 647^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1993594 and 1993603.

It is not an unprimeable number, because it can be changed into a prime (1993631) 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, 1682 + ... + 2610.

2^1993634 is an apocalyptic number.

1993634 is a deficient number, since it is larger than the sum of its proper divisors (1186966).

1993634 is a wasteful number, since it uses less digits than its factorization.

1993634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997.

The product of its digits is 17496, while the sum is 35.

The square root of 1993634 is about 1411.9610476214. The cubic root of 1993634 is about 125.8582852828.

The spelling of 1993634 in words is "one million, nine hundred ninety-three thousand, six hundred thirty-four".