1813429140 has 48 divisors (see below), whose sum is σ = 5083670592. Its totient is φ = 483003136.

The previous prime is 1813429099. The next prime is 1813429159. The reversal of 1813429140 is 419243181.

It is a happy number.

It is a super-2 number, since 2×1813429140² = 6577050491602279200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33787 + ... + 69053.

It is an arithmetic number, because the mean of its divisors is an integer number (105909804).

Almost surely, 2^1813429140 is an apocalyptic number.

1813429140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1813429140 is an abundant number, since it is smaller than the sum of its proper divisors (3270241452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1813429140 is a wasteful number, since it uses less digits than its factorization.

1813429140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36136 (or 36134 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1813429140 is about 42584.3767125926. The cubic root of 1813429140 is about 1219.4580455890.

It can be divided in two parts, 18134 and 29140, that added together give a palindrome (47274).

The spelling of 1813429140 in words is "one billion, eight hundred thirteen million, four hundred twenty-nine thousand, one hundred forty".