1148187478 has 16 divisors (see below), whose sum is σ = 1769754240. Its totient is φ = 558285696.

The previous prime is 1148187473. The next prime is 1148187503. The reversal of 1148187478 is 8747818411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148187473) 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, 226075 + ... + 231097.

It is an arithmetic number, because the mean of its divisors is an integer number (110609640).

Almost surely, 2^1148187478 is an apocalyptic number.

1148187478 is a deficient number, since it is larger than the sum of its proper divisors (621566762).

1148187478 is a wasteful number, since it uses less digits than its factorization.

1148187478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8151.

The product of its digits is 401408, while the sum is 49.

The square root of 1148187478 is about 33884.9151983593. The cubic root of 1148187478 is about 1047.1388404490.

The spelling of 1148187478 in words is "one billion, one hundred forty-eight million, one hundred eighty-seven thousand, four hundred seventy-eight".