1808072534 has 4 divisors (see below), whose sum is σ = 2712108804. Its totient is φ = 904036266.

The previous prime is 1808072507. The next prime is 1808072537. The reversal of 1808072534 is 4352708081.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808072537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452018132 + ... + 452018135.

It is an arithmetic number, because the mean of its divisors is an integer number (678027201).

Almost surely, 2^1808072534 is an apocalyptic number.

1808072534 is a deficient number, since it is larger than the sum of its proper divisors (904036270).

1808072534 is an equidigital number, since it uses as much as digits as its factorization.

1808072534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904036269.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 1808072534 is about 42521.4361704776. The cubic root of 1808072534 is about 1218.2561608291.

The spelling of 1808072534 in words is "one billion, eight hundred eight million, seventy-two thousand, five hundred thirty-four".