1662146040 has 32 divisors (see below), whose sum is σ = 4986438480. Its totient is φ = 443238912.

The previous prime is 1662146039. The next prime is 1662146047. The reversal of 1662146040 is 406412661.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1662145989 and 1662146007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662146047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6925489 + ... + 6925728.

Almost surely, 2^1662146040 is an apocalyptic number.

1662146040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1662146040 is an abundant number, since it is smaller than the sum of its proper divisors (3324292440).

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

1662146040 is a wasteful number, since it uses less digits than its factorization.

1662146040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13851231 (or 13851227 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1662146040 is about 40769.4253086795. The cubic root of 1662146040 is about 1184.5581717334.

The spelling of 1662146040 in words is "one billion, six hundred sixty-two million, one hundred forty-six thousand, forty".