1689411612 has 36 divisors (see below), whose sum is σ = 4585547400. Its totient is φ = 482688864.

The previous prime is 1689411611. The next prime is 1689411613. The reversal of 1689411612 is 2161149861.

It is an interprime number because it is at equal distance from previous prime (1689411611) and next prime (1689411613).

It is a super-3 number, since 3×1689411612³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689411611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1435987 + ... + 1437162.

Almost surely, 2^1689411612 is an apocalyptic number.

1689411612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1689411612 is an abundant number, since it is smaller than the sum of its proper divisors (2896135788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1689411612 is a wasteful number, since it uses less digits than its factorization.

1689411612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873170 (or 2873161 counting only the distinct ones).

The product of its digits is 20736, while the sum is 39.

The square root of 1689411612 is about 41102.4526275501. The cubic root of 1689411612 is about 1191.0001741299. Note that the first 3 decimals are identical.

The spelling of 1689411612 in words is "one billion, six hundred eighty-nine million, four hundred eleven thousand, six hundred twelve".