1420778830 has 16 divisors (see below), whose sum is σ = 2562495264. Its totient is φ = 567179680.

The previous prime is 1420778813. The next prime is 1420778833. The reversal of 1420778830 is 388770241.

It is a super-2 number, since 2×1420778830² = 4037224967552337800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420778833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136201 + ... + 146260.

It is an arithmetic number, because the mean of its divisors is an integer number (160155954).

Almost surely, 2^1420778830 is an apocalyptic number.

1420778830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1420778830 is a deficient number, since it is larger than the sum of its proper divisors (1141716434).

1420778830 is a wasteful number, since it uses less digits than its factorization.

1420778830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282971.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 1420778830 is about 37693.2199473592. The cubic root of 1420778830 is about 1124.1963194992.

The spelling of 1420778830 in words is "one billion, four hundred twenty million, seven hundred seventy-eight thousand, eight hundred thirty".