1670581545 has 16 divisors (see below), whose sum is σ = 2682382272. Its totient is φ = 887826240.

The previous prime is 1670581543. The next prime is 1670581547. The reversal of 1670581545 is 5451850761.

It is an interprime number because it is at equal distance from previous prime (1670581543) and next prime (1670581547).

It is not a de Polignac number, because 1670581545 - 2¹ = 1670581543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1670581497 and 1670581506.

It is not an unprimeable number, because it can be changed into a prime (1670581543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192526 + ... + 201015.

It is an arithmetic number, because the mean of its divisors is an integer number (167648892).

Almost surely, 2^1670581545 is an apocalyptic number.

1670581545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1670581545 is a deficient number, since it is larger than the sum of its proper divisors (1011800727).

1670581545 is a wasteful number, since it uses less digits than its factorization.

1670581545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393832.

The product of its (nonzero) digits is 168000, while the sum is 42.

The square root of 1670581545 is about 40872.7481948547. The cubic root of 1670581545 is about 1186.5586958936.

The spelling of 1670581545 in words is "one billion, six hundred seventy million, five hundred eighty-one thousand, five hundred forty-five".