1700420187 has 8 divisors (see below), whose sum is σ = 2269197904. Its totient is φ = 1132627968.

The previous prime is 1700420173. The next prime is 1700420203. The reversal of 1700420187 is 7810240071.

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

It is a de Polignac number, because none of the positive numbers 2^k-1700420187 is a prime.

It is a super-2 number, since 2×1700420187² = 5782857624714229938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1700420987) 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 7 ways as a sum of consecutive naturals, for example, 242338 + ... + 249255.

It is an arithmetic number, because the mean of its divisors is an integer number (283649738).

Almost surely, 2^1700420187 is an apocalyptic number.

1700420187 is a deficient number, since it is larger than the sum of its proper divisors (568777717).

1700420187 is a wasteful number, since it uses less digits than its factorization.

1700420187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492749.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 1700420187 is about 41236.1514571862. The cubic root of 1700420187 is about 1193.5815144392.

The spelling of 1700420187 in words is "one billion, seven hundred million, four hundred twenty thousand, one hundred eighty-seven".