1948620887 has 4 divisors (see below), whose sum is σ = 1950119976. Its totient is φ = 1947121800.

The previous prime is 1948620871. The next prime is 1948620911. The reversal of 1948620887 is 7880268491.

It is a happy number.

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 1948620887 - 2⁴ = 1948620871 is a prime.

It is a super-2 number, since 2×1948620887² = 7594246722505333538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1948620857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747593 + ... + 750194.

It is an arithmetic number, because the mean of its divisors is an integer number (487529994).

Almost surely, 2^1948620887 is an apocalyptic number.

1948620887 is a deficient number, since it is larger than the sum of its proper divisors (1499089).

1948620887 is a wasteful number, since it uses less digits than its factorization.

1948620887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499088.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The square root of 1948620887 is about 44143.1861899433. The cubic root of 1948620887 is about 1249.0383829839.

The spelling of 1948620887 in words is "one billion, nine hundred forty-eight million, six hundred twenty thousand, eight hundred eighty-seven".