1487901291 has 4 divisors (see below), whose sum is σ = 1983868392. Its totient is φ = 991934192.

The previous prime is 1487901253. The next prime is 1487901299. The reversal of 1487901291 is 1921097841.

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

It is a cyclic number.

It is not a de Polignac number, because 1487901291 - 2¹⁴ = 1487884907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1487901299) 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 in 3 ways as a sum of consecutive naturals, for example, 247983546 + ... + 247983551.

It is an arithmetic number, because the mean of its divisors is an integer number (495967098).

Almost surely, 2^1487901291 is an apocalyptic number.

1487901291 is a deficient number, since it is larger than the sum of its proper divisors (495967101).

1487901291 is an equidigital number, since it uses as much as digits as its factorization.

1487901291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495967100.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 1487901291 is about 38573.3235669420. The cubic root of 1487901291 is about 1141.6282496127.

The spelling of 1487901291 in words is "one billion, four hundred eighty-seven million, nine hundred one thousand, two hundred ninety-one".