2145801458 has 8 divisors (see below), whose sum is σ = 3305694252. Its totient is φ = 1043903376.

The previous prime is 2145801457. The next prime is 2145801467. The reversal of 2145801458 is 8541085412.

It can be written as a sum of positive squares in 2 ways, for example, as 1695215929 + 450585529 = 41173^2 + 21227^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2145801457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14498585 + ... + 14498732.

Almost surely, 2^2145801458 is an apocalyptic number.

2145801458 is a deficient number, since it is larger than the sum of its proper divisors (1159892794).

2145801458 is a wasteful number, since it uses less digits than its factorization.

2145801458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28997356.

The product of its (nonzero) digits is 51200, while the sum is 38.

The square root of 2145801458 is about 46322.7963102402. The cubic root of 2145801458 is about 1289.8221933086.

The spelling of 2145801458 in words is "two billion, one hundred forty-five million, eight hundred one thousand, four hundred fifty-eight".