1866480126 has 16 divisors (see below), whose sum is σ = 4266240384. Its totient is φ = 533280024.

The previous prime is 1866480113. The next prime is 1866480137. The reversal of 1866480126 is 6210846681.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 44440003 = 1866480126 / (1 + 8 + 6 + 6 + 4 + 8 + 0 + 1 + 2 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22219960 + ... + 22220043.

It is an arithmetic number, because the mean of its divisors is an integer number (266640024).

Almost surely, 2^1866480126 is an apocalyptic number.

1866480126 is an abundant number, since it is smaller than the sum of its proper divisors (2399760258).

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

1866480126 is a wasteful number, since it uses less digits than its factorization.

1866480126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44440015.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 1866480126 is about 43202.7791467169. The cubic root of 1866480126 is about 1231.2354840860.

It can be divided in two parts, 18664 and 80126, that added together give a triangular number (98790 = T₄₄₄).

The spelling of 1866480126 in words is "one billion, eight hundred sixty-six million, four hundred eighty thousand, one hundred twenty-six".