1876985397 has 24 divisors (see below), whose sum is σ = 3118267776. Its totient is φ = 1065725856.

The previous prime is 1876985393. The next prime is 1876985401. The reversal of 1876985397 is 7935896781.

1876985397 is a `hidden beast` number, since 1 + 8 + 7 + 6 + 98 + 539 + 7 = 666.

1876985397 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1876985393) and next prime (1876985401).

It is not a de Polignac number, because 1876985397 - 2² = 1876985393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1876985393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84993 + ... + 104774.

It is an arithmetic number, because the mean of its divisors is an integer number (129927824).

Almost surely, 2^1876985397 is an apocalyptic number.

It is an amenable number.

1876985397 is a deficient number, since it is larger than the sum of its proper divisors (1241282379).

1876985397 is a wasteful number, since it uses less digits than its factorization.

1876985397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189937 (or 189934 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 63.

The square root of 1876985397 is about 43324.1895134808. The cubic root of 1876985397 is about 1233.5411200839.

The spelling of 1876985397 in words is "one billion, eight hundred seventy-six million, nine hundred eighty-five thousand, three hundred ninety-seven".