1656406234 has 16 divisors (see below), whose sum is σ = 2871460800. Its totient is φ = 701911584.

The previous prime is 1656406231. The next prime is 1656406243. The reversal of 1656406234 is 4326046561.

It is a super-2 number, since 2×1656406234² = 5487363224068125512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1656406193 and 1656406202.

It is not an unprimeable number, because it can be changed into a prime (1656406231) 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, 663444 + ... + 665935.

It is an arithmetic number, because the mean of its divisors is an integer number (179466300).

Almost surely, 2^1656406234 is an apocalyptic number.

1656406234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1656406234 is a deficient number, since it is larger than the sum of its proper divisors (1215054566).

1656406234 is a wasteful number, since it uses less digits than its factorization.

1656406234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329477.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 1656406234 is about 40698.9709206511. The cubic root of 1656406234 is about 1183.1930739707.

The spelling of 1656406234 in words is "one billion, six hundred fifty-six million, four hundred six thousand, two hundred thirty-four".