1993346087 has 8 divisors (see below), whose sum is σ = 2026645920. Its totient is φ = 1960191520.

The previous prime is 1993346081. The next prime is 1993346099. The reversal of 1993346087 is 7806433991.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1993346087 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 (1993346081) 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, 8468 + ... + 63705.

It is an arithmetic number, because the mean of its divisors is an integer number (253330740).

Almost surely, 2^1993346087 is an apocalyptic number.

1993346087 is a deficient number, since it is larger than the sum of its proper divisors (33299833).

1993346087 is an equidigital number, since it uses as much as digits as its factorization.

1993346087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72633.

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 1993346087 is about 44646.9045623546. The cubic root of 1993346087 is about 1258.5222633366.

The spelling of 1993346087 in words is "one billion, nine hundred ninety-three million, three hundred forty-six thousand, eighty-seven".