1426621790 has 32 divisors (see below), whose sum is σ = 2805650784. Its totient is φ = 517978240.

The previous prime is 1426621789. The next prime is 1426621799. The reversal of 1426621790 is 971266241.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426621799) 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, 64892 + ... + 84048.

It is an arithmetic number, because the mean of its divisors is an integer number (87676587).

Almost surely, 2^1426621790 is an apocalyptic number.

1426621790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1426621790 is a deficient number, since it is larger than the sum of its proper divisors (1379028994).

1426621790 is a wasteful number, since it uses less digits than its factorization.

1426621790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19852.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1426621790 is about 37770.6472012329. The cubic root of 1426621790 is about 1125.7352993863.

The spelling of 1426621790 in words is "one billion, four hundred twenty-six million, six hundred twenty-one thousand, seven hundred ninety".