1609953494 has 16 divisors (see below), whose sum is σ = 2521359360. Its totient is φ = 769540200.

The previous prime is 1609953491. The next prime is 1609953503. The reversal of 1609953494 is 4943599061.

It is a super-3 number, since 3×1609953494³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609953491) 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, 80777 + ... + 98715.

It is an arithmetic number, because the mean of its divisors is an integer number (157584960).

Almost surely, 2^1609953494 is an apocalyptic number.

1609953494 is a deficient number, since it is larger than the sum of its proper divisors (911405866).

1609953494 is a wasteful number, since it uses less digits than its factorization.

1609953494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19915.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 1609953494 is about 40124.2257744620. The cubic root of 1609953494 is about 1172.0274327001.

The spelling of 1609953494 in words is "one billion, six hundred nine million, nine hundred fifty-three thousand, four hundred ninety-four".