1651473923 has 16 divisors (see below), whose sum is σ = 1834570080. Its totient is φ = 1473964800.

The previous prime is 1651473919. The next prime is 1651473931. The reversal of 1651473923 is 3293741561.

It is not a de Polignac number, because 1651473923 - 2² = 1651473919 is a prime.

It is a super-2 number, since 2×1651473923² = 5454732236698019858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1651473023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412013 + ... + 416001.

It is an arithmetic number, because the mean of its divisors is an integer number (114660630).

Almost surely, 2^1651473923 is an apocalyptic number.

1651473923 is a deficient number, since it is larger than the sum of its proper divisors (183096157).

1651473923 is a wasteful number, since it uses less digits than its factorization.

1651473923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678.

The product of its digits is 136080, while the sum is 41.

The square root of 1651473923 is about 40638.3307112878. The cubic root of 1651473923 is about 1182.0175011700.

It can be divided in two parts, 1651 and 473923, that added together give a palindrome (475574).

The spelling of 1651473923 in words is "one billion, six hundred fifty-one million, four hundred seventy-three thousand, nine hundred twenty-three".