1801236532 has 12 divisors (see below), whose sum is σ = 3152898756. Its totient is φ = 900408320.

The previous prime is 1801236527. The next prime is 1801236533. The reversal of 1801236532 is 2356321081.

It can be written as a sum of positive squares in 2 ways, for example, as 1692993316 + 108243216 = 41146^2 + 10404^2 .

It is a super-2 number, since 2×1801236532² = 6488906088422774048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1801236494 and 1801236503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801236533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32323 + ... + 68170.

It is an arithmetic number, because the mean of its divisors is an integer number (262741563).

Almost surely, 2^1801236532 is an apocalyptic number.

It is an amenable number.

1801236532 is a deficient number, since it is larger than the sum of its proper divisors (1351662224).

1801236532 is a wasteful number, since it uses less digits than its factorization.

1801236532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104978 (or 104976 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1801236532 is about 42440.9770387064. The cubic root of 1801236532 is about 1216.7188848879.

The spelling of 1801236532 in words is "one billion, eight hundred one million, two hundred thirty-six thousand, five hundred thirty-two".