2645408354 has 4 divisors (see below), whose sum is σ = 3968112534. Its totient is φ = 1322704176.

The previous prime is 2645408329. The next prime is 2645408357. The reversal of 2645408354 is 4538045462.

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., 1322995129 + 1322413225 = 36373^2 + 36365^2 .

It is not an unprimeable number, because it can be changed into a prime (2645408357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661352087 + ... + 661352090.

Almost surely, 2^2645408354 is an apocalyptic number.

2645408354 is a deficient number, since it is larger than the sum of its proper divisors (1322704180).

2645408354 is a wasteful number, since it uses less digits than its factorization.

2645408354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322704179.

The product of its (nonzero) digits is 460800, while the sum is 41.

The square root of 2645408354 is about 51433.5333610282. The cubic root of 2645408354 is about 1383.0277905078.

The spelling of 2645408354 in words is "two billion, six hundred forty-five million, four hundred eight thousand, three hundred fifty-four".