146378961 has 8 divisors (see below), whose sum is σ = 216857760. Its totient is φ = 97585956.

The previous prime is 146378887. The next prime is 146378963. The reversal of 146378961 is 169873641.

It is a happy number.

146378961 is a `hidden beast` number, since 1 + 4 + 637 + 8 + 9 + 6 + 1 = 666.

It is not a de Polignac number, because 146378961 - 2¹⁰ = 146377937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146378963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2710695 + ... + 2710748.

It is an arithmetic number, because the mean of its divisors is an integer number (27107220).

Almost surely, 2^146378961 is an apocalyptic number.

It is an amenable number.

146378961 is a deficient number, since it is larger than the sum of its proper divisors (70478799).

146378961 is an equidigital number, since it uses as much as digits as its factorization.

146378961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421452 (or 5421446 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 146378961 is about 12098.7173287089. The cubic root of 146378961 is about 527.0189362449.

The spelling of 146378961 in words is "one hundred forty-six million, three hundred seventy-eight thousand, nine hundred sixty-one".