1611143430 has 64 divisors (see below), whose sum is σ = 4307808960. Its totient is φ = 382910976.

The previous prime is 1611143423. The next prime is 1611143441. The reversal of 1611143430 is 343411161.

It is a self number, because there is not a number n which added to its sum of digits gives 1611143430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59917 + ... + 82536.

It is an arithmetic number, because the mean of its divisors is an integer number (67309515).

Almost surely, 2^1611143430 is an apocalyptic number.

1611143430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1611143430 is an abundant number, since it is smaller than the sum of its proper divisors (2696665530).

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

1611143430 is a wasteful number, since it uses less digits than its factorization.

1611143430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142505.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1611143430 is about 40139.0511846008. The cubic root of 1611143430 is about 1172.3161147819.

Adding to 1611143430 its reverse (343411161), we get a palindrome (1954554591).

The spelling of 1611143430 in words is "one billion, six hundred eleven million, one hundred forty-three thousand, four hundred thirty".