1672916145 has 8 divisors (see below), whose sum is σ = 2676665856. Its totient is φ = 892221936.

The previous prime is 1672916143. The next prime is 1672916159. The reversal of 1672916145 is 5416192761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1672916145 - 2¹ = 1672916143 is a prime.

It is a super-2 number, since 2×1672916145² = 5597296856403322050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1672916097 and 1672916106.

It is not an unprimeable number, because it can be changed into a prime (1672916143) 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 7 ways as a sum of consecutive naturals, for example, 55763857 + ... + 55763886.

It is an arithmetic number, because the mean of its divisors is an integer number (334583232).

Almost surely, 2^1672916145 is an apocalyptic number.

1672916145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1672916145 is a deficient number, since it is larger than the sum of its proper divisors (1003749711).

1672916145 is a wasteful number, since it uses less digits than its factorization.

1672916145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111527751.

The product of its digits is 90720, while the sum is 42.

The square root of 1672916145 is about 40901.2975955531. The cubic root of 1672916145 is about 1187.1111682822. Note that the first 4 decimals are identical.

The spelling of 1672916145 in words is "one billion, six hundred seventy-two million, nine hundred sixteen thousand, one hundred forty-five".