1620126512 has 10 divisors (see below), whose sum is σ = 3138995148. Its totient is φ = 810063248.

The previous prime is 1620126491. The next prime is 1620126527. The reversal of 1620126512 is 2156210261.

It is a super-2 number, since 2×1620126512² = 5249619829770572288, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 50628938 + ... + 50628969.

Almost surely, 2^1620126512 is an apocalyptic number.

It is an amenable number.

1620126512 is a deficient number, since it is larger than the sum of its proper divisors (1518868636).

1620126512 is a wasteful number, since it uses less digits than its factorization.

1620126512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101257915 (or 101257909 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1620126512 is about 40250.7951722696. The cubic root of 1620126512 is about 1174.4908642545.

Adding to 1620126512 its reverse (2156210261), we get a palindrome (3776336773).

The spelling of 1620126512 in words is "one billion, six hundred twenty million, one hundred twenty-six thousand, five hundred twelve".