1154652978 has 16 divisors (see below), whose sum is σ = 2341832256. Its totient is φ = 379463280.

The previous prime is 1154652977. The next prime is 1154652997. The reversal of 1154652978 is 8792564511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1154652973) 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, 1354801 + ... + 1355652.

It is an arithmetic number, because the mean of its divisors is an integer number (146364516).

Almost surely, 2^1154652978 is an apocalyptic number.

1154652978 is an abundant number, since it is smaller than the sum of its proper divisors (1187179278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1154652978 is a wasteful number, since it uses less digits than its factorization.

1154652978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710529.

The product of its digits is 604800, while the sum is 48.

The square root of 1154652978 is about 33980.1850789545. The cubic root of 1154652978 is about 1049.1006593998.

The spelling of 1154652978 in words is "one billion, one hundred fifty-four million, six hundred fifty-two thousand, nine hundred seventy-eight".