1291514902 has 4 divisors (see below), whose sum is σ = 1937272356. Its totient is φ = 645757450.

The previous prime is 1291514899. The next prime is 1291514909. The reversal of 1291514902 is 2094151921.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291514909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322878724 + ... + 322878727.

It is an arithmetic number, because the mean of its divisors is an integer number (484318089).

Almost surely, 2^1291514902 is an apocalyptic number.

1291514902 is a deficient number, since it is larger than the sum of its proper divisors (645757454).

1291514902 is an equidigital number, since it uses as much as digits as its factorization.

1291514902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645757453.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1291514902 is about 35937.6529840222. The cubic root of 1291514902 is about 1089.0131915565.

The spelling of 1291514902 in words is "one billion, two hundred ninety-one million, five hundred fourteen thousand, nine hundred two".