1921266070 has 32 divisors (see below), whose sum is σ = 3571711200. Its totient is φ = 743533056.

The previous prime is 1921266019. The next prime is 1921266077. The reversal of 1921266070 is 706621291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921266077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51726 + ... + 80734.

It is an arithmetic number, because the mean of its divisors is an integer number (111615975).

Almost surely, 2^1921266070 is an apocalyptic number.

1921266070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1921266070 is a deficient number, since it is larger than the sum of its proper divisors (1650445130).

1921266070 is a wasteful number, since it uses less digits than its factorization.

1921266070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29232.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1921266070 is about 43832.2492007882. The cubic root of 1921266070 is about 1243.1661349838.

The spelling of 1921266070 in words is "one billion, nine hundred twenty-one million, two hundred sixty-six thousand, seventy".