2145521614 has 16 divisors (see below), whose sum is σ = 3262209552. Its totient is φ = 1058159488.

The previous prime is 2145521603. The next prime is 2145521647. The reversal of 2145521614 is 4161255412.

It is a happy number.

It is a super-2 number, since 2×2145521614² = 9206525992282329992, 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 7 ways as a sum of consecutive naturals, for example, 98502 + ... + 118294.

It is an arithmetic number, because the mean of its divisors is an integer number (203888097).

Almost surely, 2^2145521614 is an apocalyptic number.

2145521614 is a deficient number, since it is larger than the sum of its proper divisors (1116687938).

2145521614 is a wasteful number, since it uses less digits than its factorization.

2145521614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20531.

The product of its digits is 9600, while the sum is 31.

The square root of 2145521614 is about 46319.7756255360. The cubic root of 2145521614 is about 1289.7661202902.

The spelling of 2145521614 in words is "two billion, one hundred forty-five million, five hundred twenty-one thousand, six hundred fourteen".