1551143116 has 24 divisors (see below), whose sum is σ = 2737566720. Its totient is φ = 769006992.

The previous prime is 1551143101. The next prime is 1551143129. The reversal of 1551143116 is 6113411551.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259821 + ... + 265723.

It is an arithmetic number, because the mean of its divisors is an integer number (114065280).

Almost surely, 2^1551143116 is an apocalyptic number.

It is an amenable number.

1551143116 is a deficient number, since it is larger than the sum of its proper divisors (1186423604).

1551143116 is a wasteful number, since it uses less digits than its factorization.

1551143116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6453 (or 6451 counting only the distinct ones).

The product of its digits is 1800, while the sum is 28.

The square root of 1551143116 is about 39384.5542821040. The cubic root of 1551143116 is about 1157.5789566841.

Adding to 1551143116 its reverse (6113411551), we get a palindrome (7664554667).

The spelling of 1551143116 in words is "one billion, five hundred fifty-one million, one hundred forty-three thousand, one hundred sixteen".