1684948007 has 4 divisors (see below), whose sum is σ = 1758206640. Its totient is φ = 1611689376.

The previous prime is 1684947973. The next prime is 1684948009. The reversal of 1684948007 is 7008494861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7008494861 = 21277 ⋅329393.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1684948007 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 (1684948009) 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, 36629282 + ... + 36629327.

It is an arithmetic number, because the mean of its divisors is an integer number (439551660).

Almost surely, 2^1684948007 is an apocalyptic number.

1684948007 is a deficient number, since it is larger than the sum of its proper divisors (73258633).

1684948007 is an equidigital number, since it uses as much as digits as its factorization.

1684948007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73258632.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 1684948007 is about 41048.1181907283. The cubic root of 1684948007 is about 1189.9503326492.

The spelling of 1684948007 in words is "one billion, six hundred eighty-four million, nine hundred forty-eight thousand, seven".