1802139662 has 4 divisors (see below), whose sum is σ = 2703209496. Its totient is φ = 901069830.

The previous prime is 1802139641. The next prime is 1802139673. The reversal of 1802139662 is 2669312081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2669312081 = 23 ⋅116057047.

It is a super-2 number, since 2×1802139662² = 6495414722706948488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450534914 + ... + 450534917.

It is an arithmetic number, because the mean of its divisors is an integer number (675802374).

Almost surely, 2^1802139662 is an apocalyptic number.

1802139662 is a deficient number, since it is larger than the sum of its proper divisors (901069834).

1802139662 is an equidigital number, since it uses as much as digits as its factorization.

1802139662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901069833.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1802139662 is about 42451.6155405186. The cubic root of 1802139662 is about 1216.9222029428.

The spelling of 1802139662 in words is "one billion, eight hundred two million, one hundred thirty-nine thousand, six hundred sixty-two".