1621234070 has 32 divisors (see below), whose sum is σ = 3093432768. Its totient is φ = 609645568.

The previous prime is 1621234049. The next prime is 1621234079. The reversal of 1621234070 is 704321261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621234079) 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 15 ways as a sum of consecutive naturals, for example, 157007 + ... + 167013.

It is an arithmetic number, because the mean of its divisors is an integer number (96669774).

Almost surely, 2^1621234070 is an apocalyptic number.

1621234070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1621234070 is a deficient number, since it is larger than the sum of its proper divisors (1472198698).

1621234070 is a wasteful number, since it uses less digits than its factorization.

1621234070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10984.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1621234070 is about 40264.5510343776. The cubic root of 1621234070 is about 1174.7584401572.

The spelling of 1621234070 in words is "one billion, six hundred twenty-one million, two hundred thirty-four thousand, seventy".