1864042997 has 8 divisors (see below), whose sum is σ = 1874159712. Its totient is φ = 1853938800.

The previous prime is 1864042993. The next prime is 1864043021. The reversal of 1864042997 is 7992404681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1864042997 - 2² = 1864042993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1864042993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518747 + ... + 522327.

It is an arithmetic number, because the mean of its divisors is an integer number (234269964).

Almost surely, 2^1864042997 is an apocalyptic number.

It is an amenable number.

1864042997 is a deficient number, since it is larger than the sum of its proper divisors (10116715).

1864042997 is a wasteful number, since it uses less digits than its factorization.

1864042997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6259.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 1864042997 is about 43174.5642363649. The cubic root of 1864042997 is about 1230.6993614593.

The spelling of 1864042997 in words is "one billion, eight hundred sixty-four million, forty-two thousand, nine hundred ninety-seven".