1620126532 has 24 divisors (see below), whose sum is σ = 2959903296. Its totient is φ = 774473568.

The previous prime is 1620126527. The next prime is 1620126533. The reversal of 1620126532 is 2356210261.

It is a self number, because there is not a number n which added to its sum of digits gives 1620126532.

It is not an unprimeable number, because it can be changed into a prime (1620126533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368298 + ... + 372670.

It is an arithmetic number, because the mean of its divisors is an integer number (123329304).

Almost surely, 2^1620126532 is an apocalyptic number.

It is an amenable number.

1620126532 is a deficient number, since it is larger than the sum of its proper divisors (1339776764).

1620126532 is a wasteful number, since it uses less digits than its factorization.

1620126532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8427 (or 8425 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1620126532 is about 40250.7954207119. The cubic root of 1620126532 is about 1174.4908690875.

Adding to 1620126532 its reverse (2356210261), we get a palindrome (3976336793).

The spelling of 1620126532 in words is "one billion, six hundred twenty million, one hundred twenty-six thousand, five hundred thirty-two".