1260738158 has 4 divisors (see below), whose sum is σ = 1891107240. Its totient is φ = 630369078.

The previous prime is 1260738121. The next prime is 1260738187. The reversal of 1260738158 is 8518370621.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315184538 + ... + 315184541.

It is an arithmetic number, because the mean of its divisors is an integer number (472776810).

Almost surely, 2^1260738158 is an apocalyptic number.

1260738158 is a deficient number, since it is larger than the sum of its proper divisors (630369082).

1260738158 is an equidigital number, since it uses as much as digits as its factorization.

1260738158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630369081.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 1260738158 is about 35506.8747991146. The cubic root of 1260738158 is about 1080.2931754375.

The spelling of 1260738158 in words is "one billion, two hundred sixty million, seven hundred thirty-eight thousand, one hundred fifty-eight".