1146863378 has 4 divisors (see below), whose sum is σ = 1720295070. Its totient is φ = 573431688.

The previous prime is 1146863371. The next prime is 1146863381. The reversal of 1146863378 is 8733686411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8733686411 = 4289 ⋅2036299.

It can be written as a sum of positive squares in only one way, i.e., 1124462089 + 22401289 = 33533^2 + 4733^2 .

It is not an unprimeable number, because it can be changed into a prime (1146863371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286715843 + ... + 286715846.

Almost surely, 2^1146863378 is an apocalyptic number.

1146863378 is a deficient number, since it is larger than the sum of its proper divisors (573431692).

1146863378 is an equidigital number, since it uses as much as digits as its factorization.

1146863378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573431691.

The product of its digits is 580608, while the sum is 47.

The square root of 1146863378 is about 33865.3713695864. The cubic root of 1146863378 is about 1046.7361623475.

The spelling of 1146863378 in words is "one billion, one hundred forty-six million, eight hundred sixty-three thousand, three hundred seventy-eight".