5145661830 has 64 divisors (see below), whose sum is σ = 13151844288. Its totient is φ = 1283973120.

The previous prime is 5145661823. The next prime is 5145661837. The reversal of 5145661830 is 381665415.

It is an interprime number because it is at equal distance from previous prime (5145661823) and next prime (5145661837).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5145661837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59070 + ... + 117390.

It is an arithmetic number, because the mean of its divisors is an integer number (205497567).

Almost surely, 2^5145661830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5145661830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6575922144).

5145661830 is an abundant number, since it is smaller than the sum of its proper divisors (8006182458).

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

5145661830 is a wasteful number, since it uses less digits than its factorization.

5145661830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58521.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 5145661830 is about 71733.2686415446. The cubic root of 5145661830 is about 1726.4224721291.

The spelling of 5145661830 in words is "five billion, one hundred forty-five million, six hundred sixty-one thousand, eight hundred thirty".