1000147378 has 4 divisors (see below), whose sum is σ = 1500221070. Its totient is φ = 500073688.

The previous prime is 1000147373. The next prime is 1000147459. The reversal of 1000147378 is 8737410001.

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., 952771689 + 47375689 = 30867^2 + 6883^2 .

It is not an unprimeable number, because it can be changed into a prime (1000147373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250036843 + ... + 250036846.

Almost surely, 2^1000147378 is an apocalyptic number.

1000147378 is a deficient number, since it is larger than the sum of its proper divisors (500073692).

1000147378 is an equidigital number, since it uses as much as digits as its factorization.

1000147378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500073691.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 1000147378 is about 31625.1067666182. The cubic root of 1000147378 is about 1000.0491235868.

Adding to 1000147378 its reverse (8737410001), we get a palindrome (9737557379).

The spelling of 1000147378 in words is "one billion, one hundred forty-seven thousand, three hundred seventy-eight".