2145020375 has 8 divisors (see below), whose sum is σ = 2676985584. Its totient is φ = 1716016200.

The previous prime is 2145020369. The next prime is 2145020387. The reversal of 2145020375 is 5730205412.

It is a happy number.

It is not a de Polignac number, because 2145020375 - 2²² = 2140826071 is a prime.

It is a super-2 number, since 2×2145020375² = 9202224818330281250, which contains 22 as substring.

It is a Duffinian number.

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, 8579957 + ... + 8580206.

It is an arithmetic number, because the mean of its divisors is an integer number (334623198).

Almost surely, 2^2145020375 is an apocalyptic number.

2145020375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2145020375 is a deficient number, since it is larger than the sum of its proper divisors (531965209).

2145020375 is an equidigital number, since it uses as much as digits as its factorization.

2145020375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17160178 (or 17160168 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 2145020375 is about 46314.3646723131. The cubic root of 2145020375 is about 1289.6656736317.

Adding to 2145020375 its reverse (5730205412), we get a palindrome (7875225787).

The spelling of 2145020375 in words is "two billion, one hundred forty-five million, twenty thousand, three hundred seventy-five".