1667312002 has 4 divisors (see below), whose sum is σ = 2500968006. Its totient is φ = 833656000.

The previous prime is 1667311991. The next prime is 1667312011. The reversal of 1667312002 is 2002137661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1653316921 + 13995081 = 40661^2 + 3741^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 416827999 + ... + 416828002.

Almost surely, 2^1667312002 is an apocalyptic number.

1667312002 is a deficient number, since it is larger than the sum of its proper divisors (833656004).

1667312002 is an equidigital number, since it uses as much as digits as its factorization.

1667312002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833656003.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1667312002 is about 40832.7319928510. The cubic root of 1667312002 is about 1185.7841076787.

Adding to 1667312002 its reverse (2002137661), we get a palindrome (3669449663).

The spelling of 1667312002 in words is "one billion, six hundred sixty-seven million, three hundred twelve thousand, two".