1690146464 has 12 divisors (see below), whose sum is σ = 3327475914. Its totient is φ = 845073216.

The previous prime is 1690146457. The next prime is 1690146481. The reversal of 1690146464 is 4646410961.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1633776400 + 56370064 = 40420^2 + 7508^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26408507 + ... + 26408570.

Almost surely, 2^1690146464 is an apocalyptic number.

It is an amenable number.

1690146464 is a deficient number, since it is larger than the sum of its proper divisors (1637329450).

1690146464 is an equidigital number, since it uses as much as digits as its factorization.

1690146464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52817087 (or 52817079 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 1690146464 is about 41111.3909275763. The cubic root of 1690146464 is about 1191.1728342415.

The spelling of 1690146464 in words is "one billion, six hundred ninety million, one hundred forty-six thousand, four hundred sixty-four".