1694993541 has 12 divisors (see below), whose sum is σ = 2335250016. Its totient is φ = 1093542360.

The previous prime is 1694993507. The next prime is 1694993543. The reversal of 1694993541 is 1453994961.

It is not a de Polignac number, because 1694993541 - 2¹⁸ = 1694731397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1694993543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291081 + ... + 296846.

It is an arithmetic number, because the mean of its divisors is an integer number (194604168).

Almost surely, 2^1694993541 is an apocalyptic number.

It is an amenable number.

1694993541 is a deficient number, since it is larger than the sum of its proper divisors (640256475).

1694993541 is an equidigital number, since it uses as much as digits as its factorization.

1694993541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587992 (or 587961 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 51.

The square root of 1694993541 is about 41170.2992580817. The cubic root of 1694993541 is about 1192.3104468654.

The spelling of 1694993541 in words is "one billion, six hundred ninety-four million, nine hundred ninety-three thousand, five hundred forty-one".