1505478164 has 6 divisors (see below), whose sum is σ = 2634586794. Its totient is φ = 752739080.

The previous prime is 1505478151. The next prime is 1505478173. The reversal of 1505478164 is 4618745051.

It can be written as a sum of positive squares in only one way, i.e., 1433228164 + 72250000 = 37858^2 + 8500^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188184767 + ... + 188184774.

It is an arithmetic number, because the mean of its divisors is an integer number (439097799).

Almost surely, 2^1505478164 is an apocalyptic number.

It is an amenable number.

1505478164 is a deficient number, since it is larger than the sum of its proper divisors (1129108630).

1505478164 is a wasteful number, since it uses less digits than its factorization.

1505478164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376369545 (or 376369543 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 1505478164 is about 38800.4918010069. The cubic root of 1505478164 is about 1146.1060900560.

The spelling of 1505478164 in words is "one billion, five hundred five million, four hundred seventy-eight thousand, one hundred sixty-four".