4651378 has 4 divisors (see below), whose sum is σ = 6977070. Its totient is φ = 2325688.

The previous prime is 4651373. The next prime is 4651391. The reversal of 4651378 is 8731564.

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., 2350089 + 2301289 = 1533^2 + 1517^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4651373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1162843 + ... + 1162846.

Almost surely, 2^4651378 is an apocalyptic number.

4651378 is a deficient number, since it is larger than the sum of its proper divisors (2325692).

4651378 is a wasteful number, since it uses less digits than its factorization.

4651378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325691.

The product of its digits is 20160, while the sum is 34.

The square root of 4651378 is about 2156.7053577158. The cubic root of 4651378 is about 166.9272395096.

The spelling of 4651378 in words is "four million, six hundred fifty-one thousand, three hundred seventy-eight".