7149505860 has 144 divisors (see below), whose sum is σ = 24834805632. Its totient is φ = 1630886400.

The previous prime is 7149505859. The next prime is 7149505921. The reversal of 7149505860 is 685059417.

7149505860 is a `hidden beast` number, since 7 + 14 + 9 + 50 + 586 + 0 = 666.

It is a super-2 number, since 2×7149505860² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 651015 + ... + 661905.

It is an arithmetic number, because the mean of its divisors is an integer number (172463928).

Almost surely, 2^7149505860 is an apocalyptic number.

7149505860 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7149505860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12417402816).

7149505860 is an abundant number, since it is smaller than the sum of its proper divisors (17685299772).

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

7149505860 is a wasteful number, since it uses less digits than its factorization.

7149505860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11434 (or 11429 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 7149505860 is about 84554.7506648799. The cubic root of 7149505860 is about 1926.4541425096.

The spelling of 7149505860 in words is "seven billion, one hundred forty-nine million, five hundred five thousand, eight hundred sixty".