2145146954 has 4 divisors (see below), whose sum is σ = 3217720434. Its totient is φ = 1072573476.

The previous prime is 2145146951. The next prime is 2145146999. The reversal of 2145146954 is 4596415412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1511265625 + 633881329 = 38875^2 + 25177^2 .

It is not an unprimeable number, because it can be changed into a prime (2145146951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536286737 + ... + 536286740.

Almost surely, 2^2145146954 is an apocalyptic number.

2145146954 is a deficient number, since it is larger than the sum of its proper divisors (1072573480).

2145146954 is a wasteful number, since it uses less digits than its factorization.

2145146954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072573479.

The product of its digits is 172800, while the sum is 41.

The square root of 2145146954 is about 46315.7311720327. The cubic root of 2145146954 is about 1289.6910411266.

The spelling of 2145146954 in words is "two billion, one hundred forty-five million, one hundred forty-six thousand, nine hundred fifty-four".