1605610054 has 4 divisors (see below), whose sum is σ = 2408415084. Its totient is φ = 802805026.

The previous prime is 1605610051. The next prime is 1605610087. The reversal of 1605610054 is 4500165061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4500165061 = 7 ⋅642880723.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605610051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401402512 + ... + 401402515.

It is an arithmetic number, because the mean of its divisors is an integer number (602103771).

Almost surely, 2^1605610054 is an apocalyptic number.

1605610054 is a deficient number, since it is larger than the sum of its proper divisors (802805030).

1605610054 is an equidigital number, since it uses as much as digits as its factorization.

1605610054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802805029.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1605610054 is about 40070.0643124016. The cubic root of 1605610054 is about 1170.9724921541.

The spelling of 1605610054 in words is "one billion, six hundred five million, six hundred ten thousand, fifty-four".