1351520673 has 32 divisors (see below), whose sum is σ = 1946572800. Its totient is φ = 831404736.

The previous prime is 1351520647. The next prime is 1351520707. The reversal of 1351520673 is 3760251531.

It is not a de Polignac number, because 1351520673 - 2¹² = 1351516577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1351520603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 612390 + ... + 614592.

It is an arithmetic number, because the mean of its divisors is an integer number (60830400).

Almost surely, 2^1351520673 is an apocalyptic number.

It is an amenable number.

1351520673 is a deficient number, since it is larger than the sum of its proper divisors (595052127).

1351520673 is a wasteful number, since it uses less digits than its factorization.

1351520673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 1351520673 is about 36763.0340559644. The cubic root of 1351520673 is about 1105.6242721891.

The spelling of 1351520673 in words is "one billion, three hundred fifty-one million, five hundred twenty thousand, six hundred seventy-three".